feat: add ubuntu 26.04 dind, remove ubuntu 23.04 dind

.github/renovate.json5

@@ -277,13 +277,23 @@
       versioning: 'regex:^(?<compatibility>.*)-(?<major>\\d+\\.\\d+)-docker-(?<minor>\\d+)\\.(?<patch>\\d+)\\.(?<build>\\d+)-(?<revision>\\d+)$',
     },
     {
-      // rule to update earthbuild/dind:ubuntu:23.04-* images
+      // rule to update earthbuild/dind:ubuntu:24.04-* images
       groupName: 'dind-images',
       matchPackageNames: [
         'earthbuild/dind',
       ],
-      matchCurrentVersion: '/^ubuntu-23\\.04-.*/',
-      allowedVersions: '/^ubuntu-23\\.04-.*/',
+      matchCurrentVersion: '/^ubuntu-24\\.04-.*/',
+      allowedVersions: '/^ubuntu-24\\.04-.*/',
+      versioning: 'regex:^(?<compatibility>.*)-(?<major>\\d+\\.\\d+)-docker-(?<minor>\\d+)\\.(?<patch>\\d+)\\.(?<build>\\d+)-(?<revision>\\d+)$',
+    },
+    {
+      // rule to update earthbuild/dind:ubuntu:26.04-* images
+      groupName: 'dind-images',
+      matchPackageNames: [
+        'earthbuild/dind',
+      ],
+      matchCurrentVersion: '/^ubuntu-26\\.04-.*/',
+      allowedVersions: '/^ubuntu-26\\.04-.*/',
       versioning: 'regex:^(?<compatibility>.*)-(?<major>\\d+\\.\\d+)-docker-(?<minor>\\d+)\\.(?<patch>\\d+)\\.(?<build>\\d+)-(?<revision>\\d+)$',
     },
     // group all examples and docs dependency updates together (except earthly/earthly and earthbuild/dind)

ast/tests/with-docker.ast.json

@@ -926,7 +926,7 @@
             "args": [
               "+cgroup-v2-test",
               "--DIND_IMG=$DIND_IMAGE",
-              "--DIND_IMG=earthbuild/dind:ubuntu-23.04-docker-25.0.2-1"
+              "--DIND_IMG=earthbuild/dind:ubuntu-26.04-docker-29.4.1-1"
             ],
             "name": "BUILD"
           }
@@ -968,7 +968,7 @@
             "args": [
               "ubuntu_img_tag",
               "=",
-              "23.04"
+              "26.04"
             ],
             "name": "ARG"
           }

docs/earthfile/earthfile.md

@@ -1264,9 +1264,9 @@ For information on using `WITH DOCKER` with podman see the [Podman guide](../gui
 
 ##### Note
 
-For performance reasons, it is recommended to use a Docker image that already contains `dockerd`. If `dockerd` is not found, Earthly will attempt to install it.
+For performance reasons, it is recommended to use a Docker image that already contains `dockerd`. If `dockerd` is not found, earth will attempt to install it.
 
-Earthly provides officially supported images such as `earthbuild/dind:alpine-3.22-docker-28.3.3-r1` and `earthbuild/dind:ubuntu-23.04-docker-25.0.2-1` to be used together with `WITH DOCKER`.
+Earth provides officially supported images such as `earthbuild/dind:alpine-3.23-docker-29.1.2-r1` and `earthbuild/dind:ubuntu-26.04-docker-29.4.1-1` to be used together with `WITH DOCKER`.
 {% endhint %}
 
 {% hint style='info' %}

docs/guides/docker-in-earthly.md

@@ -101,7 +101,7 @@ The current implementation of Docker in Earthly has a number of limitations:
           ...
   END
   ```
-- It is recommended that the target containing the `WITH DOCKER` clause inherits from a supported Docker-in-Docker (dind) image such as `earthbuild/dind:alpine-3.22-docker-28.3.3-r1` or `earthbuild/dind:ubuntu-23.04-docker-25.0.2-1`. If your build requires the use of an alternative environment as part of a test (e.g. to run commands like `sbt test` or `go test` together with a docker-compose stack), consider placing the test itself in a Docker image, then loading that image via `--load` and running the test as a Docker container.
+- It is recommended that the target containing the WITH DOCKER clause inherits from a supported Docker-in-Docker (dind) image such as earthbuild/dind:alpine-3.23-docker-29.1.2-r1 or earthbuild/dind:ubuntu-26.04-docker-29.4.1-1. If your build requires the use of an alternative environment as part of a test (e.g. to run commands like sbt test or go test together with a docker-compose stack), consider placing the test itself in a Docker image, then loading that image via --load and running the test as a Docker container.
 - If you do not use an officially supported Docker-in-Docker image, Earthly will attempt to install Docker in whatever image you have chosen. This has the drawback of not being able to use cache efficiently and is not recommended for performance reasons.
 - To maximize the use of cache, all external images used should be declared via the options `--pull` or `--compose`. Even though commands such as `docker run` automatically pull an image if it is not found locally, it will do so every single time the `WITH DOCKER` clause is executed, due to Docker caching not being preserved between runs. Pre-declaring the images ensures that they are properly cached by Earthly to minimize unnecessary redownloads.
 - `docker build` cannot be used to build Dockerfiles. However, the Earthly command `FROM DOCKERFILE` can be used instead. See [alternative to docker build](#alternative-to-docker-build) below.

tests/dind-auto-install/Earthfile

@@ -13,7 +13,9 @@ all:
     # renovate: datasource=docker packageName=ghcr.io/earthbuild/dind
     LET earthbuild_dind_ubuntu_2004_version=ubuntu-20.04-docker-28.1.1-1
     # renovate: datasource=docker packageName=ghcr.io/earthbuild/dind
-    LET earthbuild_dind_ubuntu_2404_version=ubuntu-24.04-docker-28.3.3-1
+    LET earthbuild_dind_ubuntu_2404_version=ubuntu-24.04-docker-28.5.2-1
+    # renovate: datasource=docker packageName=ghcr.io/earthbuild/dind
+    LET earthbuild_dind_ubuntu_2604_version=ubuntu-26.04-docker-29.4.1-1
 
     BUILD +test \
         --BASE_IMAGE=docker:20.10.14-dind \
@@ -30,7 +32,8 @@ all:
         --BASE_IMAGE=public.ecr.aws/amazonlinux/amazonlinux:$amazonlinux_2023_version \
         --BASE_IMAGE=ghcr.io/earthbuild/dind:$earthbuild_dind_alpine_version \
         --BASE_IMAGE=ghcr.io/earthbuild/dind:$earthbuild_dind_ubuntu_2004_version \
-        --BASE_IMAGE=ghcr.io/earthbuild/dind:$earthbuild_dind_ubuntu_2404_version
+        --BASE_IMAGE=ghcr.io/earthbuild/dind:$earthbuild_dind_ubuntu_2404_version \
+        --BASE_IMAGE=ghcr.io/earthbuild/dind:$earthbuild_dind_ubuntu_2604_version
 
 test:
     ARG --required BASE_IMAGE

tests/with-docker-validate-labels/Earthfile

@@ -1,8 +1,8 @@
 # Test for --without-earthly-labels feature
-VERSION  --allow-without-earthly-labels 0.8
+VERSION --allow-without-earthly-labels 0.8
+
+ARG --global DIND_IMAGE="earthbuild/dind:ubuntu-26.04-docker-29.4.1-1"
 
-ARG --global DIND_IMAGE="earthbuild/dind:ubuntu-23.04-docker-25.0.2-1"
-
 all:
     BUILD +test-without-labels
     BUILD +test-with-labels
@@ -20,12 +20,12 @@ myimage-with-labels:
 test-without-labels:
     FROM $DIND_IMAGE
     WITH DOCKER --load=+myimage-without-labels
-        RUN docker inspect myimage:test | jq -r '.[].Config.Labels' | grep -q null 
+        RUN docker inspect myimage:test | jq -r '.[].Config.Labels' | grep -q null
     END
 
 test-with-labels:
     FROM $DIND_IMAGE
     WITH DOCKER --load=+myimage-with-labels
         # We just test that fields aren't null.
-        RUN docker inspect myimage:test | jq -e '.[].Config.Labels' > /dev/null 
+        RUN docker inspect myimage:test | jq -e '.[].Config.Labels' > /dev/null
     END

tests/with-docker/Earthfile

@@ -163,13 +163,13 @@ if-after:
 cgroup-v2-test-all:
     BUILD +cgroup-v2-test \
         --DIND_IMG=$DIND_IMAGE \
-        --DIND_IMG=earthbuild/dind:ubuntu-23.04-docker-25.0.2-1
+        --DIND_IMG=earthbuild/dind:ubuntu-26.04-docker-29.4.1-1
 
 cgroup-v2-test:
     ARG --required DIND_IMG
     FROM $DIND_IMG
     COPY test-cgroup-v2.sh test-cgroup-v2-inside-container.sh .
-    ARG ubuntu_img_tag=23.04
+    ARG ubuntu_img_tag=26.04
     WITH DOCKER --pull ubuntu:$ubuntu_img_tag
         RUN ./test-cgroup-v2.sh
     END