More variable cleanups

.gitea/workflows/build.yaml

@@ -15,6 +15,9 @@ on:
 
 env:
   REGISTRY: ${{ vars.REGISTRY || 'davejansen.dev' }}
+  REGISTRY_USERNAME: ${{ github.actor }}
+  IMAGE_TAG: ${{ vars.IMAGE_TAG || 'latest' }}
+  IMAGE_NAME: ${{ github.event.repository.name }}
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref || github.run_id }}-${{
@@ -35,7 +38,7 @@ jobs:
       - name: Prepare environment
         run: |
           # Lowercase the image uri
-          echo "IMAGE_REGISTRY=${IMAGE_REGISTRY,,}" >> ${GITHUB_ENV}
+          echo "REGISTRY=${REGISTRY,,}" >> ${GITHUB_ENV}
           echo "IMAGE_NAME=${IMAGE_NAME,,}" >> ${GITHUB_ENV}
 
       - name: Checkout
@@ -57,7 +60,7 @@ jobs:
         uses: docker/login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
+          username: ${{ env.REGISTRY_USERNAME }}
           password: ${{ secrets.REGISTRY_TOKEN }}
 
       - name: Build and push image
@@ -65,7 +68,7 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           push: true
-          tags: davejansen/caddy-bunny:latest
+          tags: ${{ env.REGISTRY }}/${{ env.REGISTRY_USERNAME }}/${{ env.IMAGE_NAME }}:${{ env.IMAGE_TAG }}
 
       #
       # # This section is optional and only needs to be enabled if you plan on distributing