[FEAT] Dockerfile

.github/workflows/containers.yaml

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+name: Containers
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - "v*"
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  uptime:
+    name: Uptime
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v6
+
+      - name: Set Environment
+        id: vars
+        run: |
+          echo "tag=${GITHUB_REF#refs/*/}" >> $GITHUB_OUTPUT
+          echo "revision=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+          echo "build_date=$(date -u +%Y-%m-%d)" >> $GITHUB_OUTPUT
+
+      - name: Docker Metadata
+        id: meta
+        uses: docker/metadata-action@v6
+        with:
+          # list of Docker images to use as basenames for tags
+          # this should be configured for each container built
+          images: |
+            rotationalio/uptime
+            gcr.io/rotationalio-habanero/uptime
+          tags: |
+            type=semver,pattern={{raw}}
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=,suffix=,format=short
+
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v4
+
+      - name: Setup Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Login to DockerHub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v4
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_ACCESS_TOKEN }}
+
+      - name: Login to GCR
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v4
+        with:
+          registry: gcr.io
+          username: _json_key
+          password: ${{ secrets.GCR_SERVICE_ACCOUNT }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v7
+        with:
+          context: .
+          file: ./Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            GIT_REVISION=${{ steps.vars.outputs.revision }}
+            BUILD_DATE=${{ steps.vars.outputs.build_date }}

Dockerfile

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+# Dynamic builds
+ARG BUILDER_IMAGE=dhi.io/golang:1.26-debian13-dev
+ARG FINAL_IMAGE=dhi.io/golang:1.26-debian13
+
+# Build stage
+FROM --platform=${BUILDPLATFORM} ${BUILDER_IMAGE} AS builder
+
+# Build args
+ARG GIT_REVISION=""
+ARG BUILD_DATE=""
+
+# Platform args
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETPLATFORM
+
+# Use modules for dependencies
+WORKDIR $GOPATH/src/go.rtnl.ai/uptime
+
+COPY go.mod .
+COPY go.sum .
+
+# Set the build environment
+ENV CGO_ENABLED=0
+ENV GO111MODULE=on
+ENV GOOS=${TARGETOS}
+ENV GOARCH=${TARGETARCH}
+
+# Install dependencies
+RUN go mod download && go mod verify
+
+# Copy the source code
+COPY pkg/ pkg/
+COPY cmd/ cmd/
+
+# Build the uptime binary
+RUN go build -o /go/bin/uptime \
+  -ldflags="-X 'go.rtnl.ai/uptime/pkg.GitVersion=${GIT_REVISION}' -X 'go.rtnl.ai/uptime/pkg.BuildDate=${BUILD_DATE}'" \
+  ./cmd/uptime
+
+# Final stage
+FROM ${FINAL_IMAGE} AS final
+
+LABEL maintainer="Rotational Labs, Inc. <support@rotational.io>"
+LABEL description="Service status monitor for Rotational applications and systems."
+
+# Copy the uptime binary
+COPY --from=builder /go/bin/uptime /usr/local/bin/uptime
+
+CMD [ "/usr/local/bin/uptime", "serve" ]