remove Docker Hub deployement

Author: qclayssen

.github/workflows/build.yaml

@@ -24,13 +24,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Login to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          registry: docker.io
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
@@ -44,11 +37,10 @@ jobs:
             dockerfile_fn=Dockerfile.${{ matrix.build_name }};
           fi;
 
-          # Build and push to docker.io and GHCR umccr registries
+          # Build and push to GHCR umccr registry
           docker build \
             --platform linux/amd64 \
             -f docker/${dockerfile_fn} \
             -t ghcr.io/umccr/${docker_tag} \
-            -t docker.io/umccr/${docker_tag} \
             --push \
             .;