store pr builds on docker.io

.github/workflows/build-and-test.yml

@@ -39,8 +39,9 @@ jobs:
           fetch-depth: 0
           fetch-tags: 'true'
 
-      - name: Docker meta
-        id: meta
+      - name: Docker meta for GHCR
+        if: github.event_name != 'pull_request'
+        id: meta_ghcr
         uses: docker/metadata-action@v5
         with:
           images: |
@@ -51,15 +52,29 @@ jobs:
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
 
+      - name: Docker meta for Docker Hub
+        if: github.event_name == 'pull_request'
+        id: meta_docker
+        uses: docker/metadata-action@v5
+        with:
+          images: |
+            docker.io/${{ github.repository }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+
       - name: Buildah Build
         id: build-image
         uses: redhat-actions/buildah-build@v2
         with:
           containerfiles: Containerfile
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          tags: ${{ steps.meta_ghcr.outputs.tags || steps.meta_docker.outputs.tags }}
+          labels: ${{ steps.meta_ghcr.outputs.labels || steps.meta_docker.outputs.labels }}
 
-      - name: Push image
+      - name: Push image to GHCR
+        if: github.event_name != 'pull_request'
         uses: redhat-actions/push-to-registry@v2
         with:
           image: ${{ steps.build-image.outputs.image }}
@@ -67,6 +82,15 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ github.token }}
 
+      - name: Push image to Docker
+        if: github.event_name == 'pull_request'
+        uses: redhat-actions/push-to-registry@v2
+        with:
+          image: ${{ steps.build-image.outputs.image }}
+          tags: ${{ steps.build-image.outputs.tags }}
+          username: ${{ secrets.DOCKER_LOGIN }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
   build-and-push-iso:
     name: Build ISO
     runs-on: ubuntu-latest