CI: Move ARM related jobs to ARM hardware

They did run on emulation, but are much faster on ARM hardware.

Author: larskanis

.github/workflows/ci.yml

@@ -241,21 +241,23 @@ jobs:
           - { ruby: "3.0", rubygems: "3.5.23" }
           - { ruby: "2.7", rubygems: "3.4.22" }
           # declare docker image for each platform
-          - { platform: aarch64-linux-musl, docker_tag: "-alpine" }
-          - { platform: arm-linux-musl, docker_tag: "-alpine" }
-          - { platform: x86-linux-musl, docker_tag: "-alpine" }
-          - { platform: x86_64-linux-musl, docker_tag: "-alpine" }
+          - { platform: aarch64-linux-musl, runon: "ubuntu-24.04-arm", docker_tag: "-alpine" }
+          - { platform: arm-linux-musl, runon: "ubuntu-24.04-arm", docker_tag: "-alpine" }
+          - { platform: x86-linux-musl, runon: "ubuntu-latest", docker_tag: "-alpine" }
+          - { platform: x86_64-linux-musl, runon: "ubuntu-latest", docker_tag: "-alpine" }
+          - { platform: x86_64-linux, runon: "ubuntu-latest" }
+          - { platform: x86_64-linux-gnu, runon: "ubuntu-latest" }
           # declare docker platform for each platform
-          - { platform: aarch64-linux, docker_platform: "--platform=linux/arm64" }
-          - { platform: aarch64-linux-gnu, docker_platform: "--platform=linux/arm64" }
-          - { platform: aarch64-linux-musl, docker_platform: "--platform=linux/arm64" }
-          - { platform: arm-linux, docker_platform: "--platform=linux/arm/v7" }
-          - { platform: arm-linux-gnu, docker_platform: "--platform=linux/arm/v7" }
-          - { platform: arm-linux-musl, docker_platform: "--platform=linux/arm/v7" }
-          - { platform: x86-linux, docker_platform: "--platform=linux/386" }
-          - { platform: x86-linux-gnu, docker_platform: "--platform=linux/386" }
-          - { platform: x86-linux-musl, docker_platform: "--platform=linux/386" }
-    runs-on: ubuntu-latest
+          - { platform: aarch64-linux, runon: "ubuntu-24.04-arm", docker_platform: "--platform=linux/arm64" }
+          - { platform: aarch64-linux-gnu, runon: "ubuntu-24.04-arm", docker_platform: "--platform=linux/arm64" }
+          - { platform: aarch64-linux-musl, runon: "ubuntu-24.04-arm", docker_platform: "--platform=linux/arm64" }
+          - { platform: arm-linux, runon: "ubuntu-24.04-arm", docker_platform: "--platform=linux/arm/v7" }
+          - { platform: arm-linux-gnu, runon: "ubuntu-24.04-arm", docker_platform: "--platform=linux/arm/v7" }
+          - { platform: arm-linux-musl, runon: "ubuntu-24.04-arm", docker_platform: "--platform=linux/arm/v7" }
+          - { platform: x86-linux, runon: "ubuntu-latest", docker_platform: "--platform=linux/386" }
+          - { platform: x86-linux-gnu, runon: "ubuntu-latest", docker_platform: "--platform=linux/386" }
+          - { platform: x86-linux-musl, runon: "ubuntu-latest", docker_platform: "--platform=linux/386" }
+    runs-on: ${{ matrix.runon }}
     steps:
       - uses: actions/checkout@v4
       - name: Download gem-${{ matrix.platform }}
@@ -264,7 +266,6 @@ jobs:
           name: gem-${{ matrix.platform }}
       - name: Run tests
         run: |
-          docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
           docker run --rm -v $PWD:/work -w /work \
             ${{ matrix.docker_platform}} ruby:${{ matrix.ruby }}${{ matrix.docker_tag }} \
             sh -c "
@@ -383,27 +384,32 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - from_image: navikey/raspbian-bullseye
+          - runon: ubuntu-24.04-arm
+            from_image: navikey/raspbian-bullseye
             image_platform: linux/arm/v7
             platform: arm-linux # bullseye ships ruby 2.7, rubygems won't recognize -gnu suffix
             dockerfile: debian
-          - from_image: arm64v8/ubuntu
+          - runon: ubuntu-24.04-arm
+            from_image: arm64v8/ubuntu
             image_platform: linux/aarch64
             platform: aarch64-linux # arm64v8 ships ruby 3.0, rubygems won't recognize -gnu suffix
             dockerfile: debian
-          - from_image: i386/alpine
+          - runon: ubuntu-latest
+            from_image: i386/alpine
             image_platform: linux/386
             platform: x86-linux-musl
             dockerfile: alpine
-          - from_image: arm32v6/alpine
+          - runon: ubuntu-24.04-arm
+            from_image: arm32v6/alpine
             image_platform: linux/arm/v6
             platform: arm-linux-musl
             dockerfile: alpine
-          - from_image: alpine
+          - runon: ubuntu-latest
+            from_image: alpine
             image_platform: linux/amd64
             platform: x86_64-linux-musl
             dockerfile: alpine
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.runon }}
     steps:
       - uses: actions/checkout@v4
       - name: Download gem-${{ matrix.platform }}
@@ -412,7 +418,6 @@ jobs:
           name: gem-${{ matrix.platform }}
       - name: Build ${{ matrix.from_image }} image
         run: |
-          docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
           docker build --rm --build-arg from_image=${{ matrix.from_image }} --platform=${{ matrix.image_platform }} -t ruby-test -f test/env/Dockerfile.${{ matrix.dockerfile }} .
       - name: Run tests
         run: docker run --rm -t --network=host -v `pwd`:/build ruby-test