Update docker pipeline to support pre-releases as well

.github/workflows/docker-release.yml

@@ -8,7 +8,7 @@ on:
         required: true
 
   release:
-    types: [released]
+    types: [published]
 
 permissions:
   packages: write
@@ -16,7 +16,7 @@ permissions:
 
 env:
   TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
-  
+
 jobs:
 # ===============================================================
 #   Building Dev Images
@@ -26,7 +26,7 @@ jobs:
     steps:
     - name: checkout
       uses: actions/checkout@v3
-    
+
     - uses: dsaltares/fetch-gh-release-asset@master
       with:
         version: 'tags/${{ env.TAG_NAME }}'
@@ -38,7 +38,7 @@ jobs:
     - name: Set up QEMU
       id: qemu
       uses: docker/setup-qemu-action@v1
-      with:          
+      with:
           platforms: arm64,amd64
 
     - name: Set up Docker Buildx
@@ -50,23 +50,24 @@ jobs:
         registry: ghcr.io
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
-    
+
     - name: Extract artifacts
       run: |
         ls -l
         ls -l releases
         for f in releases/*.tar.gz; do tar xvfz $f -C releases; done
         rm releases/*.tar.gz
-    
-    - name: Build dragonfly ubuntu
+
+    - name: Build release image
+      if: ${{ !github.event.release.prerelease }}
       uses: docker/build-push-action@v2
       with:
         context: .
         platforms: linux/amd64,linux/arm64
-        
+
         # Define QEMU settings inside the builder
         build-args: |
-          QEMU_CPU=max,pauth-impdef=on  
+          QEMU_CPU=max,pauth-impdef=on
 
         push: ${{ github.event_name != 'pull_request' }}
         tags: |
@@ -74,7 +75,22 @@ jobs:
           ghcr.io/${{ github.repository }}:latest
           ghcr.io/${{ github.repository }}:${{ env.TAG_NAME }}
           ghcr.io/${{ github.repository }}:${{ env.TAG_NAME }}-ubuntu
-          
+
         file: tools/docker/Dockerfile.ubuntu-prod
         cache-from: type=registry,ref=${{ github.repository }}:latest
         cache-to: type=inline
+
+    - name: Build pre-release image
+      if: ${{ github.event.release.prerelease }}
+      uses: docker/build-push-action@v2
+      with:
+        context: .
+        platforms: linux/amd64,linux/arm64
+
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: |
+          ghcr.io/${{ github.repository }}:alpha
+          ghcr.io/${{ github.repository }}:${{ env.TAG_NAME }}
+        file: tools/docker/Dockerfile.ubuntu-prod
+        cache-from: type=registry,ref=${{ github.repository }}:latest
+        cache-to: type=inline