Woodpecker CI: Isolate armv7 Docker builds

.woodpecker/docker-armv7.yaml

@@ -0,0 +1,84 @@
+when:
+  # Temporary PR validation while arm/v7 Docker builds are being brought up.
+  - event: pull_request
+    path: [ "**/*.ex", "**/*.eex", "**/*.exs", "mix.lock", ".woodpecker/**", "Dockerfile" ]
+  - event: push
+    branch: ${CI_REPO_DEFAULT_BRANCH}
+    path: [ "**/*.ex", "**/*.eex", "**/*.exs", "mix.lock", ".woodpecker/**", "Dockerfile" ]
+  - event: tag
+  - event: manual
+    branch: ${CI_REPO_DEFAULT_BRANCH}
+  - event: manual
+    branch: stable
+
+# Target the CAX21 arm64 host with native arm32 userspace support, not generic arm64 runners.
+labels:
+  armv7: native
+
+variables:
+  docker_variables: &docker_variables
+    repo: pleroma/pleroma
+    registry: git.pleroma.social
+  armv7_build_settings: &armv7_build_settings
+    <<: *docker_variables
+    build_args:
+      - ELIXIR_IMG=arm32v7/elixir
+      - ELIXIR_TAG=1.17.3-otp-26-alpine
+      - ALPINE_IMG=arm32v7/alpine
+      - ALPINE_VER=3.20
+    extra_opts: --custom-platform=linux/arm/v7
+  armv7_push_settings: &armv7_push_settings
+    <<: *armv7_build_settings
+    username:
+      from_secret: pleroma-ci-user
+    password:
+      from_secret: pleroma-ci-password
+
+steps:
+  docker-armv7-pr:
+    image: woodpeckerci/plugin-kaniko:2.3.1
+    when:
+      - event: pull_request
+    settings:
+      <<: *armv7_build_settings
+      dry_run: true
+      tags:
+        - armv7-pr-check
+
+  docker-develop-armv7:
+    image: woodpeckerci/plugin-kaniko:2.3.1
+    when:
+      - event: push
+        branch: ${CI_REPO_DEFAULT_BRANCH}
+      - event: manual
+        branch: ${CI_REPO_DEFAULT_BRANCH}
+    settings:
+      <<: *armv7_push_settings
+      tags:
+        - latest-armv7
+        - develop-armv7
+        - ${CI_COMMIT_SHA:0:8}-armv7
+
+  docker-stable-armv7:
+    image: woodpeckerci/plugin-kaniko:2.3.1
+    when:
+      - evaluate: 'CI_PIPELINE_EVENT == "manual" && CI_COMMIT_BRANCH == "stable" && CI_COMMIT_TAG == ""'
+    settings:
+      <<: *armv7_push_settings
+      tags:
+        - latest-armv7
+        - stable-armv7
+        - ${CI_COMMIT_SHA:0:8}-armv7
+
+  docker-stable-tag-armv7:
+    image: woodpeckerci/plugin-kaniko:2.3.1
+    when:
+      - event: tag
+      - evaluate: 'CI_PIPELINE_EVENT == "manual" && CI_COMMIT_BRANCH == "stable" && CI_COMMIT_TAG != ""'
+    settings:
+      <<: *armv7_push_settings
+      tags:
+        - latest-armv7
+        - stable-armv7
+        - ${CI_COMMIT_SHA:0:8}-armv7
+        - ${CI_COMMIT_TAG}-armv7

.woodpecker/docker-combine.yaml

@@ -27,7 +27,7 @@ steps:
     settings: &docker_settings
       registry: "git.pleroma.social"
       image: "pleroma/pleroma"
-      architectures: [amd64, arm64, armv7]
+      architectures: [amd64, arm64]
       tags:
         - latest
         - develop

.woodpecker/docker.yaml

@@ -11,7 +11,6 @@ when:
 matrix:
   platform:
     - linux/amd64
-    - linux/arm
     - linux/arm64
 
 # This is needed for the when clauses below.
@@ -28,13 +27,6 @@ variables:
     password:
       from_secret: pleroma-ci-password
   kaniko_image: &kaniko_image woodpeckerci/plugin-kaniko:2.3.1
-  # HexPM Elixir images are not published for arm/v7.
-  armv7_build_args: &armv7_build_args
-    - ELIXIR_IMG=arm32v7/elixir
-    - ELIXIR_TAG=1.17.3-alpine
-    - ALPINE_IMG=arm32v7/alpine
-    - ALPINE_VER=3.22
-  armv7_extra_opts: &armv7_extra_opts --custom-platform=linux/arm/v7
 
 steps:
   docker-develop-amd64:
@@ -59,19 +51,6 @@ steps:
         - develop-arm64
         - ${CI_COMMIT_SHA:0:8}-arm64
 
-  docker-develop-armv7:
-    image: *kaniko_image
-    when:
-      - evaluate: 'platform == "linux/arm" && CI_COMMIT_BRANCH == "${CI_REPO_DEFAULT_BRANCH}"'
-    settings:
-      <<: *docker_variables
-      build_args: *armv7_build_args
-      extra_opts: *armv7_extra_opts
-      tags:
-        - latest-armv7
-        - develop-armv7
-        - ${CI_COMMIT_SHA:0:8}-armv7
-
   docker-stable-amd64:
     image: *kaniko_image
     when:
@@ -105,19 +84,6 @@ steps:
         - stable-arm64
         - ${CI_COMMIT_SHA:0:8}-arm64
 
-  docker-stable-armv7:
-    image: *kaniko_image
-    when:
-      - evaluate: 'platform == "linux/arm" && CI_PIPELINE_EVENT == "manual" && CI_COMMIT_BRANCH == "stable" && CI_COMMIT_TAG == ""'
-    settings:
-      <<: *docker_variables
-      build_args: *armv7_build_args
-      extra_opts: *armv7_extra_opts
-      tags: &armv7_tags
-        - latest-armv7
-        - stable-armv7
-        - ${CI_COMMIT_SHA:0:8}-armv7
-
   docker-stable-tag-arm64:
     image: *kaniko_image
     when:
@@ -128,16 +94,3 @@ steps:
       tags:
         - <<: *arm64_tags
         - ${CI_COMMIT_TAG}-arm64
-
-  docker-stable-tag-armv7:
-    image: *kaniko_image
-    when:
-      - evaluate: 'platform == "linux/arm" && CI_PIPELINE_EVENT == "tag"'
-      - evaluate: 'platform == "linux/arm" && CI_PIPELINE_EVENT == "manual" && CI_COMMIT_BRANCH == "stable" && CI_COMMIT_TAG != ""'
-    settings:
-      <<: *docker_variables
-      build_args: *armv7_build_args
-      extra_opts: *armv7_extra_opts
-      tags:
-        - <<: *armv7_tags
-        - ${CI_COMMIT_TAG}-armv7