From 92f25c615a3667013deef4ee1f39cc7164a3a538 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 08:00:05 +0000
Subject: [PATCH 1/9] Add ngrok devcontainer feature with amd64 and arm64
 support

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/f2bd6af8-987d-45c6-956f-71706b53a0dd

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 src/ngrok/README.md                 | 33 +++++++++++++++++
 src/ngrok/devcontainer-feature.json | 13 +++++++
 src/ngrok/install.sh                | 57 +++++++++++++++++++++++++++++
 test/ngrok/scenarios.json           |  8 ++++
 test/ngrok/test.sh                  | 12 ++++++
 5 files changed, 123 insertions(+)
 create mode 100644 src/ngrok/README.md
 create mode 100644 src/ngrok/devcontainer-feature.json
 create mode 100755 src/ngrok/install.sh
 create mode 100644 test/ngrok/scenarios.json
 create mode 100755 test/ngrok/test.sh

diff --git a/src/ngrok/README.md b/src/ngrok/README.md
new file mode 100644
index 0000000..bfcdc5a
--- /dev/null
+++ b/src/ngrok/README.md
@@ -0,0 +1,33 @@
+# ngrok
+
+Installs [ngrok](https://ngrok.com/), a secure tunnel to localhost. Supports both `amd64` and `arm64` architectures.
+
+## Options
+
+| Options Id | Description | Type | Default Value |
+|-----|-----|-----|-----|
+| version | Version of ngrok to install (e.g. `latest`, `stable`, or a specific version like `3.5.0`) | string | latest |
+
+## Usage
+
+Add to your `devcontainer.json`:
+
+```jsonc
+{
+    "features": {
+        "ghcr.io/tokidoki11/devcontainer-feature/ngrok:1": {}
+    }
+}
+```
+
+To install a specific version:
+
+```jsonc
+{
+    "features": {
+        "ghcr.io/tokidoki11/devcontainer-feature/ngrok:1": {
+            "version": "3.5.0"
+        }
+    }
+}
+```
diff --git a/src/ngrok/devcontainer-feature.json b/src/ngrok/devcontainer-feature.json
new file mode 100644
index 0000000..39915bb
--- /dev/null
+++ b/src/ngrok/devcontainer-feature.json
@@ -0,0 +1,13 @@
+{
+  "name": "ngrok",
+  "id": "ngrok",
+  "version": "1.0.0",
+  "description": "Install ngrok - a secure tunnel to localhost. Supports amd64 and arm64 architectures.",
+  "options": {
+    "version": {
+      "type": "string",
+      "default": "latest",
+      "description": "Version of ngrok to install (e.g. 'latest', 'stable', or a specific version like '3.5.0')"
+    }
+  }
+}
diff --git a/src/ngrok/install.sh b/src/ngrok/install.sh
new file mode 100755
index 0000000..a49eab5
--- /dev/null
+++ b/src/ngrok/install.sh
@@ -0,0 +1,57 @@
+#!/bin/bash
+set -e
+
+NGROK_VERSION="${VERSION:-"latest"}"
+
+# Detect architecture
+ARCH=$(uname -m)
+case "$ARCH" in
+    x86_64) NGROK_ARCH="amd64" ;;
+    aarch64 | arm64) NGROK_ARCH="arm64" ;;
+    *) echo "Unsupported architecture: $ARCH"; exit 1 ;;
+esac
+
+# Map "latest" to "stable" for the equinox download URL
+if [ "$NGROK_VERSION" = "latest" ]; then
+    NGROK_VERSION="stable"
+fi
+
+# The equinox.io URL path 'bNyj1mQVY4c' is ngrok's stable channel identifier for v3.
+# Supported values for NGROK_VERSION: 'stable', or specific versions like '3.5.0'.
+DOWNLOAD_URL="https://bin.equinox.io/c/bNyj1mQVY4c/ngrok-v3-${NGROK_VERSION}-linux-${NGROK_ARCH}.tgz"
+
+# Checks if packages are installed and installs them if not
+check_packages() {
+    if ! dpkg -s "$@" > /dev/null 2>&1; then
+        if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+            echo "Running apt-get update..."
+            apt-get update -y
+        fi
+        apt-get -y install --no-install-recommends "$@"
+    fi
+}
+
+export DEBIAN_FRONTEND=noninteractive
+
+check_packages curl ca-certificates
+
+echo "Downloading ngrok ${NGROK_VERSION} for ${NGROK_ARCH} from ${DOWNLOAD_URL}"
+
+TEMP_DIR=$(mktemp -d)
+if ! curl -sSL --fail "${DOWNLOAD_URL}" -o "${TEMP_DIR}/ngrok.tgz"; then
+    echo "ERROR: Failed to download ngrok. Please verify the version '${NGROK_VERSION}' is valid and the URL is reachable: ${DOWNLOAD_URL}"
+    rm -rf "${TEMP_DIR}"
+    exit 1
+fi
+if ! tar -xzf "${TEMP_DIR}/ngrok.tgz" -C "${TEMP_DIR}"; then
+    echo "ERROR: Failed to extract ngrok archive. The downloaded file may be corrupted."
+    rm -rf "${TEMP_DIR}"
+    exit 1
+fi
+install -m 0755 "${TEMP_DIR}/ngrok" /usr/local/bin/ngrok
+
+rm -rf "${TEMP_DIR}"
+rm -rf /var/lib/apt/lists/*
+
+echo "ngrok installed successfully"
+ngrok version
diff --git a/test/ngrok/scenarios.json b/test/ngrok/scenarios.json
new file mode 100644
index 0000000..6e908c0
--- /dev/null
+++ b/test/ngrok/scenarios.json
@@ -0,0 +1,8 @@
+{
+    "install_latest": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
+        "features": {
+            "ngrok": {}
+        }
+    }
+}
diff --git a/test/ngrok/test.sh b/test/ngrok/test.sh
new file mode 100755
index 0000000..53124ce
--- /dev/null
+++ b/test/ngrok/test.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+# Feature-specific tests
+check "ngrok installed" bash -c "ngrok version"
+check "ngrok is executable" which ngrok
+
+# Report results
+reportResults

From c2594762b65feea4f8fd570f2117f997206c49ea Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 08:28:13 +0000
Subject: [PATCH 2/9] Add ngrok to CI test matrix in GitHub Actions workflow

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/afc37722-61dd-4f13-a843-238fb1973566

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/workflows/test.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index fa62b5b..168b8b2 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -15,6 +15,7 @@ jobs:
         features:
           - cargo-lambda
           - lambroll
+          - ngrok
         baseImage:
           - debian:latest
           - ubuntu:latest
@@ -35,6 +36,7 @@ jobs:
         features:
           - cargo-lambda
           - lambroll
+          - ngrok
     steps:
       - uses: actions/checkout@v4
 

From 2780cec1adc5f82e615abd77127e4748cfb52fc3 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 08:34:12 +0000
Subject: [PATCH 3/9] Add install_latest.sh scenario test script for ngrok
 feature

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/055bcfd5-a8ac-4c76-a69a-56fb8ef53558

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 test/ngrok/install_latest.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100755 test/ngrok/install_latest.sh

diff --git a/test/ngrok/install_latest.sh b/test/ngrok/install_latest.sh
new file mode 100755
index 0000000..53124ce
--- /dev/null
+++ b/test/ngrok/install_latest.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+source dev-container-features-test-lib
+
+# Feature-specific tests
+check "ngrok installed" bash -c "ngrok version"
+check "ngrok is executable" which ngrok
+
+# Report results
+reportResults

From 5df5e5d24b321acea0f47ea368ad496000ba5190 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 08:43:53 +0000
Subject: [PATCH 4/9] Add path-based change detection to CI workflow using
 dorny/paths-filter

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/86ad65f1-c431-453e-ab95-f647fa7aef96

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/workflows/test.yaml | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 168b8b2..d12c269 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -7,7 +7,31 @@ on:
   workflow_dispatch:
 
 jobs:
+  changes:
+    runs-on: ubuntu-latest
+    outputs:
+      cargo-lambda: ${{ steps.filter.outputs.cargo-lambda }}
+      lambroll: ${{ steps.filter.outputs.lambroll }}
+      ngrok: ${{ steps.filter.outputs.ngrok }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: dorny/paths-filter@v3
+        id: filter
+        with:
+          filters: |
+            cargo-lambda:
+              - 'src/cargo-lambda/**'
+              - 'test/cargo-lambda/**'
+            lambroll:
+              - 'src/lambroll/**'
+              - 'test/lambroll/**'
+            ngrok:
+              - 'src/ngrok/**'
+              - 'test/ngrok/**'
+
   test-autogenerated:
+    needs: changes
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:
@@ -19,6 +43,11 @@ jobs:
         baseImage:
           - debian:latest
           - ubuntu:latest
+    if: |
+      github.event_name == 'workflow_dispatch' ||
+      (matrix.features == 'cargo-lambda' && needs.changes.outputs.cargo-lambda == 'true') ||
+      (matrix.features == 'lambroll' && needs.changes.outputs.lambroll == 'true') ||
+      (matrix.features == 'ngrok' && needs.changes.outputs.ngrok == 'true')
     steps:
       - uses: actions/checkout@v4
 
@@ -29,6 +58,7 @@ jobs:
         run: devcontainer features test --skip-scenarios -f ${{ matrix.features }} -i ${{ matrix.baseImage }} .
 
   test-scenarios:
+    needs: changes
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:
@@ -37,6 +67,11 @@ jobs:
           - cargo-lambda
           - lambroll
           - ngrok
+    if: |
+      github.event_name == 'workflow_dispatch' ||
+      (matrix.features == 'cargo-lambda' && needs.changes.outputs.cargo-lambda == 'true') ||
+      (matrix.features == 'lambroll' && needs.changes.outputs.lambroll == 'true') ||
+      (matrix.features == 'ngrok' && needs.changes.outputs.ngrok == 'true')
     steps:
       - uses: actions/checkout@v4
 

From 95e235b5e611f86734b00c540e2b8524e0b1bfd1 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 08:44:39 +0000
Subject: [PATCH 5/9] Add explicit permissions block to CI workflow (contents:
 read)

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/86ad65f1-c431-453e-ab95-f647fa7aef96

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/workflows/test.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index d12c269..8711d5f 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -6,6 +6,9 @@ on:
   pull_request:
   workflow_dispatch:
 
+permissions:
+  contents: read
+
 jobs:
   changes:
     runs-on: ubuntu-latest

From 46af616a68a293683f76918affe708389817e6b2 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 09:00:15 +0000
Subject: [PATCH 6/9] Fix invalid workflow: split feature matrix into
 per-feature jobs for valid if conditions

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/3f7a0c2b-a1f8-4fb8-b79e-36c1de785a96

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/workflows/test.yaml | 96 +++++++++++++++++++++++++++----------
 1 file changed, 72 insertions(+), 24 deletions(-)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 8711d5f..ef656bc 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -33,56 +33,104 @@ jobs:
               - 'src/ngrok/**'
               - 'test/ngrok/**'
 
-  test-autogenerated:
+  test-autogenerated-cargo-lambda:
     needs: changes
+    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.cargo-lambda == 'true'
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:
       matrix:
-        features:
-          - cargo-lambda
-          - lambroll
-          - ngrok
         baseImage:
           - debian:latest
           - ubuntu:latest
-    if: |
-      github.event_name == 'workflow_dispatch' ||
-      (matrix.features == 'cargo-lambda' && needs.changes.outputs.cargo-lambda == 'true') ||
-      (matrix.features == 'lambroll' && needs.changes.outputs.lambroll == 'true') ||
-      (matrix.features == 'ngrok' && needs.changes.outputs.ngrok == 'true')
     steps:
       - uses: actions/checkout@v4
 
       - name: "Install latest devcontainer CLI"
         run: npm install -g @devcontainers/cli
 
-      - name: "Generating tests for '${{ matrix.features }}' against '${{ matrix.baseImage }}'"
-        run: devcontainer features test --skip-scenarios -f ${{ matrix.features }} -i ${{ matrix.baseImage }} .
+      - name: "Generating tests for 'cargo-lambda' against '${{ matrix.baseImage }}'"
+        run: devcontainer features test --skip-scenarios -f cargo-lambda -i ${{ matrix.baseImage }} .
 
-  test-scenarios:
+  test-autogenerated-lambroll:
     needs: changes
+    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.lambroll == 'true'
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:
       matrix:
-        features:
-          - cargo-lambda
-          - lambroll
-          - ngrok
-    if: |
-      github.event_name == 'workflow_dispatch' ||
-      (matrix.features == 'cargo-lambda' && needs.changes.outputs.cargo-lambda == 'true') ||
-      (matrix.features == 'lambroll' && needs.changes.outputs.lambroll == 'true') ||
-      (matrix.features == 'ngrok' && needs.changes.outputs.ngrok == 'true')
+        baseImage:
+          - debian:latest
+          - ubuntu:latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Generating tests for 'lambroll' against '${{ matrix.baseImage }}'"
+        run: devcontainer features test --skip-scenarios -f lambroll -i ${{ matrix.baseImage }} .
+
+  test-autogenerated-ngrok:
+    needs: changes
+    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.ngrok == 'true'
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    strategy:
+      matrix:
+        baseImage:
+          - debian:latest
+          - ubuntu:latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Generating tests for 'ngrok' against '${{ matrix.baseImage }}'"
+        run: devcontainer features test --skip-scenarios -f ngrok -i ${{ matrix.baseImage }} .
+
+  test-scenarios-cargo-lambda:
+    needs: changes
+    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.cargo-lambda == 'true'
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Generating tests for 'cargo-lambda' scenarios"
+        run: devcontainer features test -f cargo-lambda --skip-autogenerated --skip-duplicated .
+
+  test-scenarios-lambroll:
+    needs: changes
+    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.lambroll == 'true'
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Generating tests for 'lambroll' scenarios"
+        run: devcontainer features test -f lambroll --skip-autogenerated --skip-duplicated .
+
+  test-scenarios-ngrok:
+    needs: changes
+    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.ngrok == 'true'
+    runs-on: ubuntu-latest
+    continue-on-error: true
     steps:
       - uses: actions/checkout@v4
 
       - name: "Install latest devcontainer CLI"
         run: npm install -g @devcontainers/cli
 
-      - name: "Generating tests for '${{ matrix.features }}' scenarios"
-        run: devcontainer features test -f ${{ matrix.features }} --skip-autogenerated --skip-duplicated .
+      - name: "Generating tests for 'ngrok' scenarios"
+        run: devcontainer features test -f ngrok --skip-autogenerated --skip-duplicated .
 
   test-global:
     runs-on: ubuntu-latest

From c4877467094abb2335c19af869cd8c75d2d806ec Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 10:10:48 +0000
Subject: [PATCH 7/9] Use dynamic matrix from compute-feature-matrix job;
 update root README with ngrok

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/6a022cd3-682d-4dc2-abfc-cdb9d2f4eb6c

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/workflows/test.yaml | 110 +++++++++++-------------------------
 README.md                   |   8 ++-
 2 files changed, 39 insertions(+), 79 deletions(-)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index ef656bc..1cb5dad 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -10,12 +10,10 @@ permissions:
   contents: read
 
 jobs:
-  changes:
+  compute-feature-matrix:
     runs-on: ubuntu-latest
     outputs:
-      cargo-lambda: ${{ steps.filter.outputs.cargo-lambda }}
-      lambroll: ${{ steps.filter.outputs.lambroll }}
-      ngrok: ${{ steps.filter.outputs.ngrok }}
+      features: ${{ steps.compute.outputs.features }}
     steps:
       - uses: actions/checkout@v4
 
@@ -33,13 +31,32 @@ jobs:
               - 'src/ngrok/**'
               - 'test/ngrok/**'
 
-  test-autogenerated-cargo-lambda:
-    needs: changes
-    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.cargo-lambda == 'true'
+      - name: "Compute features matrix"
+        id: compute
+        run: |
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            echo 'features=["cargo-lambda","lambroll","ngrok"]' >> "$GITHUB_OUTPUT"
+          else
+            features=()
+            [ "${{ steps.filter.outputs.cargo-lambda }}" = "true" ] && features+=("cargo-lambda")
+            [ "${{ steps.filter.outputs.lambroll }}" = "true" ] && features+=("lambroll")
+            [ "${{ steps.filter.outputs.ngrok }}" = "true" ] && features+=("ngrok")
+            if [ ${#features[@]} -eq 0 ]; then
+              echo 'features=[]' >> "$GITHUB_OUTPUT"
+            else
+              json=$(printf '%s\n' "${features[@]}" | jq -R . | jq -sc .)
+              echo "features=$json" >> "$GITHUB_OUTPUT"
+            fi
+          fi
+
+  test-autogenerated:
+    needs: compute-feature-matrix
+    if: needs.compute-feature-matrix.outputs.features != '[]' && needs.compute-feature-matrix.outputs.features != ''
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:
       matrix:
+        features: ${{ fromJson(needs.compute-feature-matrix.outputs.features) }}
         baseImage:
           - debian:latest
           - ubuntu:latest
@@ -49,88 +66,25 @@ jobs:
       - name: "Install latest devcontainer CLI"
         run: npm install -g @devcontainers/cli
 
-      - name: "Generating tests for 'cargo-lambda' against '${{ matrix.baseImage }}'"
-        run: devcontainer features test --skip-scenarios -f cargo-lambda -i ${{ matrix.baseImage }} .
+      - name: "Generating tests for '${{ matrix.features }}' against '${{ matrix.baseImage }}'"
+        run: devcontainer features test --skip-scenarios -f ${{ matrix.features }} -i ${{ matrix.baseImage }} .
 
-  test-autogenerated-lambroll:
-    needs: changes
-    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.lambroll == 'true'
+  test-scenarios:
+    needs: compute-feature-matrix
+    if: needs.compute-feature-matrix.outputs.features != '[]' && needs.compute-feature-matrix.outputs.features != ''
     runs-on: ubuntu-latest
     continue-on-error: true
     strategy:
       matrix:
-        baseImage:
-          - debian:latest
-          - ubuntu:latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: "Install latest devcontainer CLI"
-        run: npm install -g @devcontainers/cli
-
-      - name: "Generating tests for 'lambroll' against '${{ matrix.baseImage }}'"
-        run: devcontainer features test --skip-scenarios -f lambroll -i ${{ matrix.baseImage }} .
-
-  test-autogenerated-ngrok:
-    needs: changes
-    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.ngrok == 'true'
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    strategy:
-      matrix:
-        baseImage:
-          - debian:latest
-          - ubuntu:latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: "Install latest devcontainer CLI"
-        run: npm install -g @devcontainers/cli
-
-      - name: "Generating tests for 'ngrok' against '${{ matrix.baseImage }}'"
-        run: devcontainer features test --skip-scenarios -f ngrok -i ${{ matrix.baseImage }} .
-
-  test-scenarios-cargo-lambda:
-    needs: changes
-    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.cargo-lambda == 'true'
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: "Install latest devcontainer CLI"
-        run: npm install -g @devcontainers/cli
-
-      - name: "Generating tests for 'cargo-lambda' scenarios"
-        run: devcontainer features test -f cargo-lambda --skip-autogenerated --skip-duplicated .
-
-  test-scenarios-lambroll:
-    needs: changes
-    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.lambroll == 'true'
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: "Install latest devcontainer CLI"
-        run: npm install -g @devcontainers/cli
-
-      - name: "Generating tests for 'lambroll' scenarios"
-        run: devcontainer features test -f lambroll --skip-autogenerated --skip-duplicated .
-
-  test-scenarios-ngrok:
-    needs: changes
-    if: github.event_name == 'workflow_dispatch' || needs.changes.outputs.ngrok == 'true'
-    runs-on: ubuntu-latest
-    continue-on-error: true
+        features: ${{ fromJson(needs.compute-feature-matrix.outputs.features) }}
     steps:
       - uses: actions/checkout@v4
 
       - name: "Install latest devcontainer CLI"
         run: npm install -g @devcontainers/cli
 
-      - name: "Generating tests for 'ngrok' scenarios"
-        run: devcontainer features test -f ngrok --skip-autogenerated --skip-duplicated .
+      - name: "Generating tests for '${{ matrix.features }}' scenarios"
+        run: devcontainer features test -f ${{ matrix.features }} --skip-autogenerated --skip-duplicated .
 
   test-global:
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index 3ecb208..a3682e6 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@
 > 
 > - [cargo-lambda](https://www.cargo-lambda.info/)
 > - [lambroll](https://github.com/fujiwara/lambroll)
+> - [ngrok](https://ngrok.com/)
 
 
 # How to use
@@ -13,4 +14,9 @@ note:
   - This will install zig to latest version via (ghcr.io/devcontainers-extra/features/zig:1)
   - `rust` and `binstall` when not available, will be downloaded  
 
-Lambroll: [Readme](src/lambroll/README.md)
\ No newline at end of file
+Lambroll: [Readme](src/lambroll/README.md)
+
+ngrok: [Readme](src/ngrok/README.md)
+
+- Supports `amd64` (x86_64) and `arm64` (aarch64) architectures
+- Defaults to the latest stable release; a specific version can be pinned via the `version` option
\ No newline at end of file

From c520aeec6421cbb09e46a2d17c1b114cf5ba25cc Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 10:19:24 +0000
Subject: [PATCH 8/9] Simplify compute-feature-matrix script: use associative
 array map instead of if/else

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/0e5ae084-4e5c-41a7-b7a1-75d1447db8c4

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/workflows/test.yaml | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1cb5dad..1445b5f 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -34,19 +34,25 @@ jobs:
       - name: "Compute features matrix"
         id: compute
         run: |
-          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
-            echo 'features=["cargo-lambda","lambroll","ngrok"]' >> "$GITHUB_OUTPUT"
-          else
-            features=()
-            [ "${{ steps.filter.outputs.cargo-lambda }}" = "true" ] && features+=("cargo-lambda")
-            [ "${{ steps.filter.outputs.lambroll }}" = "true" ] && features+=("lambroll")
-            [ "${{ steps.filter.outputs.ngrok }}" = "true" ] && features+=("ngrok")
-            if [ ${#features[@]} -eq 0 ]; then
-              echo 'features=[]' >> "$GITHUB_OUTPUT"
-            else
-              json=$(printf '%s\n' "${features[@]}" | jq -R . | jq -sc .)
-              echo "features=$json" >> "$GITHUB_OUTPUT"
+          all_features=("cargo-lambda" "lambroll" "ngrok")
+          declare -A changed=(
+            ["cargo-lambda"]="${{ steps.filter.outputs.cargo-lambda }}"
+            ["lambroll"]="${{ steps.filter.outputs.lambroll }}"
+            ["ngrok"]="${{ steps.filter.outputs.ngrok }}"
+          )
+
+          features=()
+          for feature in "${all_features[@]}"; do
+            if [ "${{ github.event_name }}" = "workflow_dispatch" ] || [ "${changed[$feature]}" = "true" ]; then
+              features+=("$feature")
             fi
+          done
+
+          if [ ${#features[@]} -eq 0 ]; then
+            echo 'features=[]' >> "$GITHUB_OUTPUT"
+          else
+            json=$(printf '%s\n' "${features[@]}" | jq -R . | jq -sc .)
+            echo "features=$json" >> "$GITHUB_OUTPUT"
           fi
 
   test-autogenerated:

From c8cc5d0d113c7f28a35943d2757d0df5bac4c247 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 3 Apr 2026 10:23:11 +0000
Subject: [PATCH 9/9] Extract feature matrix computation to
 .github/compute-feature-matrix.sh

Agent-Logs-Url: https://github.com/tokidoki11/devcontainer-feature/sessions/09c41b36-ecff-403c-91db-83a6860b25b9

Co-authored-by: tokidoki11 <7564844+tokidoki11@users.noreply.github.com>
---
 .github/compute-feature-matrix.sh | 29 +++++++++++++++++++++++++++++
 .github/workflows/test.yaml       | 25 +++++--------------------
 2 files changed, 34 insertions(+), 20 deletions(-)
 create mode 100755 .github/compute-feature-matrix.sh

diff --git a/.github/compute-feature-matrix.sh b/.github/compute-feature-matrix.sh
new file mode 100755
index 0000000..ed78711
--- /dev/null
+++ b/.github/compute-feature-matrix.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+# Usage: compute-feature-matrix.sh <event_name> <changed_cargo-lambda> <changed_lambroll> <changed_ngrok>
+# Outputs a JSON array of feature names to GITHUB_OUTPUT (or stdout when GITHUB_OUTPUT is unset).
+set -euo pipefail
+
+event_name="${1:-}"
+shift
+
+all_features=("cargo-lambda" "lambroll" "ngrok")
+declare -A changed=(
+  ["cargo-lambda"]="${1:-false}"
+  ["lambroll"]="${2:-false}"
+  ["ngrok"]="${3:-false}"
+)
+
+features=()
+for feature in "${all_features[@]}"; do
+  if [ "$event_name" = "workflow_dispatch" ] || [ "${changed[$feature]}" = "true" ]; then
+    features+=("$feature")
+  fi
+done
+
+if [ ${#features[@]} -eq 0 ]; then
+  json="[]"
+else
+  json=$(printf '%s\n' "${features[@]}" | jq -R . | jq -sc .)
+fi
+
+echo "features=$json" | tee -a "${GITHUB_OUTPUT:-/dev/stdout}"
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1445b5f..fb500c7 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -34,26 +34,11 @@ jobs:
       - name: "Compute features matrix"
         id: compute
         run: |
-          all_features=("cargo-lambda" "lambroll" "ngrok")
-          declare -A changed=(
-            ["cargo-lambda"]="${{ steps.filter.outputs.cargo-lambda }}"
-            ["lambroll"]="${{ steps.filter.outputs.lambroll }}"
-            ["ngrok"]="${{ steps.filter.outputs.ngrok }}"
-          )
-
-          features=()
-          for feature in "${all_features[@]}"; do
-            if [ "${{ github.event_name }}" = "workflow_dispatch" ] || [ "${changed[$feature]}" = "true" ]; then
-              features+=("$feature")
-            fi
-          done
-
-          if [ ${#features[@]} -eq 0 ]; then
-            echo 'features=[]' >> "$GITHUB_OUTPUT"
-          else
-            json=$(printf '%s\n' "${features[@]}" | jq -R . | jq -sc .)
-            echo "features=$json" >> "$GITHUB_OUTPUT"
-          fi
+          bash .github/compute-feature-matrix.sh \
+            "${{ github.event_name }}" \
+            "${{ steps.filter.outputs.cargo-lambda }}" \
+            "${{ steps.filter.outputs.lambroll }}" \
+            "${{ steps.filter.outputs.ngrok }}"
 
   test-autogenerated:
     needs: compute-feature-matrix