fix: streamline Docker registry configuration for improved login and metadata extraction

Co-authored-by: Copilot <copilot@github.com>

.gitea/workflows/build.yml

@@ -6,8 +6,7 @@ on:
       - main
 
 env:
-  REGISTRY_HOST: gitea.gitea.svc.cluster.local:3000
-  REGISTRY_HTTP: http://gitea.gitea.svc.cluster.local:3000
+  REGISTRY: gitea.gitea.svc.cluster.local
   IMAGE_NAME: ${{ gitea.repository }}
 
 jobs:
@@ -23,22 +22,19 @@ jobs:
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
-        with:
-          buildkitd-config-inline: |
-            [registry."${{ env.REGISTRY_HOST }}"]
-              http = true
-              insecure = true
 
       - name: Log in to Gitea Container Registry
-        shell: bash
-        run: |
-          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login "${{ env.REGISTRY_HTTP }}" -u "${{ gitea.repository_owner }}" --password-stdin
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ gitea.repository_owner }}
+          password: ${{ secrets.REGISTRY_TOKEN }}
 
       - name: Extract metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.REGISTRY_HOST }}/${{ env.IMAGE_NAME }}
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             type=sha,prefix=,format=short
             type=raw,value=latest,enable={{is_default_branch}}