other: Build and test localnet on macos

Author: aefhm

.github/workflows/docker-localnet.yml

@@ -12,7 +12,7 @@ jobs:
   docker:
     strategy:
       matrix:
-        docker_image: [emerald-localnet, sapphire-localnet]
+        docker_image: [sapphire-localnet]
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
@@ -24,13 +24,6 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Login to ghcr.io
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
       - name: Compute version
         # Version docker image by date and git revision.
         run: |
@@ -52,8 +45,17 @@ jobs:
         working-directory: docker/${{ matrix.docker_image }}
         run: ./test.sh
 
+      - name: Export
+        run: docker save ghcr.io/oasisprotocol/${{ matrix.docker_image }}:local --output /tmp/${{ matrix.docker_image }}.tar
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.docker_image }}
+          path: /tmp/${{ matrix.docker_image }}.tar
+
       - name: Push
-        if: ${{ github.event_name == 'push' }}
+        if: ${{ github.event_name == 'push' && matrix.os == 'ubuntu-latest' }}
         uses: docker/build-push-action@v6
         with:
           build-args: |
@@ -69,7 +71,7 @@ jobs:
             org.opencontainers.image.revision=${{ github.sha }}
 
       - name: Prune old ghcr.io/oasisprotocol/${{ matrix.docker_image }} images
-        if: ${{ github.event_name == 'push' }}
+        if: ${{ github.event_name == 'push' && matrix.os == 'ubuntu-latest' }}
         uses: vlaurin/[email protected]
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -79,3 +81,35 @@ jobs:
           keep-last: 2
           prune-untagged: true
           prune-tags-regexes: ^latest-
+
+  mac:
+    needs: docker
+    strategy:
+      matrix:
+        docker_image: [sapphire-localnet]
+    runs-on: macos-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          # We need history to determine oasis-web3-gateway version from git tag.
+          fetch-depth: 0
+
+      - name: Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ matrix.docker_image }}
+          path: /tmp
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Load image
+        run: |
+          docker load --input /tmp/${{ matrix.docker_image }}.tar
+          docker image ls -a
+
+      - name: Test
+        timeout-minutes: 3
+        working-directory: docker/sapphire-localnet
+        run: ./test.sh