Update workflow for Plexdrive 5.2.1

.github/workflows/docker-publish.yml

@@ -6,7 +6,7 @@ name: Publish on Docker & ghcr.io
 # documentation.
 
 on:
-  # Scheduled trigger
+  # Scheduled trigger (every day at 00:00 UTC)
   schedule:
     - cron: '0 0 * * *'
   # On push commit trigger
@@ -21,7 +21,7 @@ on:
 
   # Allows manual trigger
   workflow_dispatch:
-  
+
   # Allows external webhook trigger
   repository_dispatch:
     types:
@@ -79,7 +79,7 @@ jobs:
           tags: |
             type=ref,event=branch
           images: |
-            ${{ github.repository }}
+            ${{ env.IMAGE_NAME }}
             ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
       # Build and push Docker image with Buildx (don't push on PR)
@@ -93,15 +93,27 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
 
+      # Extract metadata (tags, labels) for Docker (Plexdrive 5.2.1)
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata (Plexdrive 5.2.1)
+        id: meta_pd521
+        uses: docker/metadata-action@v5
+        with:
+          tags: |
+            type=ref,event=branch,suffix="-pd521"
+          images: |
+            ${{ env.IMAGE_NAME }}
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
       # Build and push Docker image (Plexdrive 5.2.1) with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
-      - name: Build and push Docker image
+      - name: Build and push Docker image (Plexdrive 5.2.1)
         uses: docker/build-push-action@v5
         with:
           context: .
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           build-args: |
             PLEXDRIVE_VERSION='5.2.1'
-          tags: ${{ steps.meta.outputs.tags }}-pd521
-          labels: ${{ steps.meta.outputs.labels }}
+          tags: ${{ steps.meta_pd521.outputs.tags }}
+          labels: ${{ steps.meta_pd521.outputs.labels }}