feat: add ubuntu 26.04

.github/workflows/ci.yml

@@ -27,6 +27,7 @@ jobs:
           - ubuntu-20.04
           - ubuntu-23.04
           - ubuntu-24.04
+          - ubuntu-26.04
     runs-on: ubuntu-24.04
     permissions:
       contents: read

CONTRIBUTING.md

@@ -22,13 +22,17 @@ dependencies that will trigger new versions of the dind images such as the docke
 ├── common
 │   └── Earthfile // A library of common helper targets
 └── os // Each directory contains an Earthfile with targets to maintain the specific os (e.g. +test, +build)
-    ├── alpine
+    ├── alpine-3.22
+    │   └── Earthfile
+    ├── alpine-3.23
     │   └── Earthfile
     ├── ubuntu-20.04
     │   └── Earthfile
     ├── ubuntu-23.04
     │   └── Earthfile
     └── ubuntu-24.04
+    │   └── Earthfile
+    └── ubuntu-26.04
         └── Earthfile
 ```
 

README.md

@@ -14,13 +14,15 @@ This image supports the following Linux distributions:
 * ubuntu:20.04
 * ubuntu:23.04
 * ubuntu:24.04
+* ubuntu:26.04
 
 For which the current latest tags (respectively) are:
 * `alpine-3.22-docker-28.3.3-r2`
 * `alpine-3.23-docker-29.1.2-r1`
 * `ubuntu-20.04-docker-28.1.1-1`
 * `ubuntu-23.04-docker-25.0.2-1`
 * `ubuntu-24.04-docker-28.5.1-1`
+* `ubuntu-26.04-docker-29.4.1-1`
 
 For other available tags, please check out [ghcr.io/earthbuild/dind](https://github.com/earthbuild/dind/pkgs/container/dind/versions?filters%5Bversion_type%5D=tagged) or [earthbuild/dind](https://hub.docker.com/r/earthbuild/dind/tags).
 

os/alpine-3.22/Earthfile

@@ -28,11 +28,11 @@ release:
 test-build:
     BUILD --pass-args common+build-and-test --IMAGE_NAME="dindtest"
 
-# build builds an dind:alpine image
+# build builds a dind image
 build:
     BUILD --pass-args --platform=linux/amd64 --platform=linux/arm64 common+build
 
-# test runs test for a dind:alpine image
+# test runs test for a dind image
 # this is primarly used to run against a newly, temporariy image build by +test-build
 test:
     BUILD --pass-args common+alpine-kind-test

os/alpine-3.23/Earthfile

@@ -30,11 +30,11 @@ release:
 test-build:
     BUILD --pass-args common+build-and-test --IMAGE_NAME="dindtest"
 
-# build builds an dind:alpine image
+# build builds a dind image
 build:
     BUILD --pass-args --platform=linux/amd64 --platform=linux/arm64 common+build
 
-# test runs test for a dind:alpine image
+# test runs test for a dind image
 # this is primarly used to run against a newly, temporariy image build by +test-build
 test:
     BUILD --pass-args common+alpine-kind-test

os/ubuntu-20.04/Earthfile

@@ -29,11 +29,11 @@ release:
 test-build:
     BUILD --pass-args common+build-and-test --IMAGE_NAME="dindtest"
 
-# build builds an dind:alpine image
+# build builds a dind image
 build:
     BUILD --pass-args --platform=linux/amd64 --platform=linux/arm64 common+build
 
-# test runs test for a dind:alpine image
+# test runs test for a dind image
 # this is primarly used to run against a newly, temporariy image build by +test-build
 test:
     BUILD --pass-args common+ubuntu-kind-test

os/ubuntu-23.04/Earthfile

@@ -29,11 +29,11 @@ release:
 test-build:
     BUILD --pass-args common+build-and-test --IMAGE_NAME="dindtest"
 
-# build builds an dind:alpine image
+# build builds a dind image
 build:
     BUILD --pass-args --platform=linux/amd64 --platform=linux/arm64 common+build
 
-# test runs test for a dind:alpine image
+# test runs test for a dind image
 # this is primarly used to run against a newly, temporariy image build by +test-build
 test:
     BUILD --pass-args common+ubuntu-kind-test

os/ubuntu-24.04/Earthfile

@@ -29,11 +29,11 @@ release:
 test-build:
     BUILD --pass-args common+build-and-test --IMAGE_NAME="dindtest"
 
-# build builds an dind:alpine image
+# build builds a dind image
 build:
     BUILD --pass-args --platform=linux/amd64 --platform=linux/arm64 common+build
 
-# test runs test for a dind:alpine image
+# test runs test for a dind image
 # this is primarly used to run against a newly, temporariy image build by +test-build
 test:
     BUILD --pass-args common+ubuntu-kind-test

os/ubuntu-26.04/Earthfile

@@ -0,0 +1,40 @@
+VERSION --build-auto-skip 0.8
+
+FROM alpine:3.23.3@sha256:25109184c71bdad752c8312a8623239686a9a2071e8825f20acb8f2198c3f659
+
+IMPORT ../../common AS common
+
+ARG --global OS_IMAGE=ubuntu
+
+ARG --global OS_VERSION=26.04
+# renovate: datasource=github-releases depName=docker/docker
+LET docker_package_version=29.4.1
+ARG --global DOCKER_VERSION=5:$docker_package_version-1~ubuntu.$OS_VERSION~resolute
+
+# DIR_PATH is set to that common targets can call os specific targets. It should match the directory name this Earthfile is located in
+ARG --global DIR_PATH=$OS_IMAGE-$OS_VERSION
+
+# release builds the image using a new datetime as a suffix and run tests against the pushed image, then finally retag and push the image without the datetime suffix
+release:
+    RUN --no-cache date --utc +%Y%m%d%H%M%S > datetime
+    LET datetime="$(cat datetime)"
+    WAIT
+        BUILD --pass-args common+build-and-test --SUFFIX=$datetime
+    END
+    COPY --dir --pass-args common+get-image-info/image-info .
+    LET image_tag="$(cat image-info/tag)-$datetime"
+    BUILD --pass-args common+push-new-tag-multi-platform --TAG_WITH_DATE=$image_tag
+
+# test-build will build a test image that is pushed to a temporary registry and run tests against it
+test-build:
+    BUILD --pass-args common+build-and-test --IMAGE_NAME="dindtest"
+
+# build builds a dind image
+build:
+    BUILD --pass-args --platform=linux/amd64 --platform=linux/arm64 common+build
+
+# test runs test for a dind image
+# this is primarly used to run against a newly, temporariy image build by +test-build
+test:
+    BUILD --pass-args common+ubuntu-kind-test
+    BUILD --pass-args common+test