ci: Conditionning docker with the presence of credentials

Signed-off-by: Vincent Boutour <[email protected]>

Author: ViBiOh

.github/workflows/build.yaml

@@ -38,19 +38,24 @@ jobs:
     steps:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
-      - name: Login to DockerHub
-        uses: docker/login-action@v1
-        with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_PASS }}
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
           go-version: "^1.16"
       - name: Build
         run: |
           curl --disable --silent --show-error --location --max-time 30 "https://raw.githubusercontent.com/ViBiOh/scripts/main/bootstrap" | bash -s "release"
-          DOCKER_IMAGE="${{ secrets.DOCKER_USER }}/$(make name)" IMAGE_VERSION="$(make version)" ./scripts/release build docker
+          ./scripts/release build
+      - name: Login to DockerHub
+        if: secrets.DOCKER_USER != "" && secrets.DOCKER_PASS != ""
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_PASS }}
+      - name: Docker
+        if: secrets.DOCKER_USER != "" && secrets.DOCKER_PASS != ""
+        run: |
+          DOCKER_IMAGE="${{ secrets.DOCKER_USER }}/$(make name)" IMAGE_VERSION="$(make version)" ./scripts/release docker
 
   publish:
     name: Publish