Woodpecker CI: Build armv7 Docker images

.woodpecker/docker-combine.yaml

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

.woodpecker/docker.yaml

@@ -11,6 +11,7 @@ when:
 matrix:
   platform:
     - linux/amd64
+    - linux/arm
     - linux/arm64
 
 # This is needed for the when clauses below.
@@ -27,6 +28,13 @@ 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:
@@ -51,6 +59,19 @@ 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:
@@ -84,6 +105,19 @@ 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:
@@ -94,3 +128,16 @@ 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

Dockerfile

@@ -3,8 +3,10 @@ ARG ELIXIR_IMG=hexpm/elixir
 ARG ELIXIR_VER=1.17.3
 ARG ERLANG_VER=26.2.5.6
 ARG ALPINE_VER=3.17.9
+ARG ELIXIR_TAG=${ELIXIR_VER}-erlang-${ERLANG_VER}-alpine-${ALPINE_VER}
+ARG ALPINE_IMG=alpine
 
-FROM ${ELIXIR_IMG}:${ELIXIR_VER}-erlang-${ERLANG_VER}-alpine-${ALPINE_VER} AS build
+FROM ${ELIXIR_IMG}:${ELIXIR_TAG} AS build
 
 COPY . .
 
@@ -20,7 +22,7 @@ RUN apk add git gcc g++ musl-dev make cmake file-dev vips-dev &&\
 	mkdir release &&\
 	mix release --path release
 
-FROM alpine:${ALPINE_VER}
+FROM ${ALPINE_IMG}:${ALPINE_VER}
 
 ARG BUILD_DATE
 ARG VCS_REF