Merge pull request #6 from Sauer02/dev

use different docker login

Author: Sauer02

.github/workflows/nextjs.yml

@@ -13,6 +13,10 @@ env:
   DOCKER_USER: ${{secrets.DOCKER_USER}}
   DOCKER_PASSWORD: ${{secrets.DOCKER_PASSWORD}}
   REPO_NAME: ${{secrets.REPO_NAME}}
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: docker.io
+  # github.repository as <account>/<repo>
+  IMAGE_NAME: csauercampus
 
 jobs:
   # Linting Job
@@ -73,16 +77,59 @@ jobs:
       - name: Run npm audit
         run: npm audit --audit-level=high
 
-      - name: docker login
-        run: | # log into docker hub account
-          docker login -u $DOCKER_USER -p $DOCKER_PASSWORD
+      # Install the cosign tool except on PR
+      - name: Install cosign
+        if: github.event_name != 'pull_request'
+        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 #v3.5.0
+        with:
+          cosign-release: "v2.2.4"
 
-      - name: Get current date # get the date of the build
-        id: date
-        run: echo "::set-output name=date::$(date +'%Y-%m-%d--%M-%S')"
+      # Set up BuildKit Docker container builder to be able to build
+      # multi-platform images and export cache
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
 
-      - name: Build the Docker image # push The image to the docker hub
-        run: docker build . --file Dockerfile --tag $DOCKER_USER/$REPO_NAME:${{ steps.date.outputs.date }}
+      # Login against a Docker registry except on PR
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ env.DOCKER_USER }}
+          password: ${{ env.DOCKER_PASSWORD }}
+
+      # Extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
-      - name: Docker Push
-        run: docker push $DOCKER_USER/$REPO_NAME:${{ steps.date.outputs.date }}
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      # Sign the resulting Docker image digest except on PRs.
+      # This will only write to the public Rekor transparency log when the Docker
+      # repository is public to avoid leaking data.  If you would like to publish
+      # transparency data even for private images, pass --force to cosign below.
+      # https://github.com/sigstore/cosign
+      - name: Sign the published Docker image
+        if: ${{ github.event_name != 'pull_request' }}
+        env:
+          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
+          TAGS: ${{ steps.meta.outputs.tags }}
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}
+        # This step uses the identity token to provision an ephemeral certificate
+        # against the sigstore community Fulcio instance.
+        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}