don't try login on pull_request

Author: karuboniru

.github/workflows/docker-publish-full.yml

@@ -19,7 +19,7 @@ env:
   # github.repository as <account>/<repo>
   IMAGE_NAME: ${{ github.repository }}-full
   # docker.io/<account>/<repo>
-  DOCKERHUB_IMAGE: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}-full
+  AUTHOR: urenko
 
 
 jobs: 
@@ -62,6 +62,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
@@ -79,7 +80,7 @@ jobs:
         id: meta_dockerhub
         uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
         with:
-          images: docker.io/${{ env.DOCKERHUB_IMAGE }}
+          images: docker.io/${{ secrets.DOCKERHUB_USERNAME || env.AUTHOR }}/${{ github.event.repository.name }}-full
 
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action

.github/workflows/docker-publish-minimal.yml

@@ -19,7 +19,7 @@ env:
   # github.repository as <account>/<repo>
   IMAGE_NAME: ${{ github.repository }}
   # docker.io/<account>/<repo>
-  DOCKERHUB_IMAGE: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}
+  AUTHOR: urenko
 
 
 jobs: 
@@ -62,6 +62,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       -
         name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
@@ -79,7 +80,7 @@ jobs:
         id: meta_dockerhub
         uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
         with:
-          images: docker.io/${{ env.DOCKERHUB_IMAGE }}
+          images: docker.io/${{ secrets.DOCKERHUB_USERNAME || env.AUTHOR }}/${{ github.event.repository.name }}
 
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action