Publish registry image with skopeo

.gitea/workflows/ci.yaml

@@ -32,24 +32,20 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Install Buildah
+      - name: Install Docker and Skopeo
         run: |
           apt-get update
-          apt-get install -y buildah
-
-      - name: Login to Gitea Registry
-        env:
-          REGISTRY_HOST: ${{ vars.REGISTRY_HOST }}
-          REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
-        run: |
-          printf '%s' "${REGISTRY_PASSWORD}" | buildah login --tls-verify=false -u "${GITHUB_REPOSITORY_OWNER}" --password-stdin "${REGISTRY_HOST}"
+          apt-get install -y docker.io skopeo
 
       - name: Build and Push Image
         env:
           REGISTRY_HOST: ${{ vars.REGISTRY_HOST }}
+          REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
         run: |
-          export BUILDAH_ISOLATION=chroot
-          image="${REGISTRY_HOST}/${GITHUB_REPOSITORY}"
-          buildah bud --storage-driver=vfs --format docker -t "${image}:main" -t "${image}:sha-${GITHUB_SHA}" .
-          buildah push --tls-verify=false "${image}:main"
-          buildah push --tls-verify=false "${image}:sha-${GITHUB_SHA}"
+          local_image="${GITHUB_REPOSITORY##*/}:ci"
+          archive="/tmp/${GITHUB_REPOSITORY##*/}.tar"
+          docker build -t "${local_image}" .
+          docker save "${local_image}" -o "${archive}"
+          for tag in main "sha-${GITHUB_SHA}"; do
+            skopeo copy --dest-creds "${GITHUB_REPOSITORY_OWNER}:${REGISTRY_PASSWORD}" --dest-tls-verify=false "docker-archive:${archive}" "docker://${REGISTRY_HOST}/${GITHUB_REPOSITORY}:${tag}"
+          done