Only do registry logins on main

Signed-off-by: Jacob Weinstock <[email protected]>

.github/workflows/build-all-matrix.yaml

@@ -80,7 +80,7 @@ jobs:
       - name: Build and Push LinuxKit containers for ${{matrix.docker_arch}}
         env:
           DOCKER_ARCH: "${{ matrix.docker_arch }}"
-          DO_PUSH: "yes"
+          DO_PUSH: "${{ github.ref == 'refs/heads/main' && 'yes' || 'no' }}"
         run: bash build.sh linuxkit-containers
 
   build-kernels:
@@ -99,7 +99,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Docker Login to quay.io
-        if: ${{ env.REGISTRY == 'quay.io' }}
+        if: ${{ env.REGISTRY == 'quay.io' && github.ref == 'refs/heads/main' }}
         uses: docker/login-action@v3
         with: { registry: "quay.io", username: "${{ secrets.QUAY_USERNAME }}", password: "${{ secrets.QUAY_PASSWORD }}" }
 
@@ -110,7 +110,7 @@ jobs:
 
       - name: Build and push Kernel ${{matrix.kernel}} (${{ matrix.arch }})
         env:
-          DO_PUSH: "yes"
+          DO_PUSH: "${{ github.ref == 'refs/heads/main' && 'yes' || 'no' }}"
         run: bash build.sh build-kernel "${{ matrix.kernel }}"
 
   build-hook-ensemble:
@@ -134,7 +134,7 @@ jobs:
         with: { registry: "docker.io", username: "${{ secrets.DOCKERHUB_USERNAME }}", password: "${{ secrets.DOCKERHUB_PASSWORD }}" }
 
       - name: Docker Login to quay.io
-        if: ${{ env.REGISTRY == 'quay.io' }}
+        if: ${{ env.REGISTRY == 'quay.io' && github.ref == 'refs/heads/main' }}
         uses: docker/login-action@v3
         with: { registry: "quay.io", username: "${{ secrets.QUAY_USERNAME }}", password: "${{ secrets.QUAY_PASSWORD }}" }