⚙️ github: use GITHUB_TOKEN to authenticate to ghcr

.github/workflows/build-image.yml

@@ -9,6 +9,8 @@ env:
 jobs:
   build:
     runs-on: ubuntu-latest
+    permissions:
+      packages: write
     steps:
       - uses: actions/checkout@v2.3.3
 
@@ -22,23 +24,12 @@ jobs:
           docker tag ${{ github.sha }} ${ENDPOINT}:${{ github.sha }}
           docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}
           docker tag ${{ github.sha }} ghcr.io/${ENDPOINT}:${{ github.sha }}
-      - name: Credential check
-        if: ${{ github.ref == format('refs/heads/{0}', env.BRANCH) && env.ENDPOINT != 'user/endpoint' }}
-        run: |
-          echo "CR_USER=${{ secrets.CR_USER }}" >> $GITHUB_ENV
-          echo "CR_PAT=${{ secrets.CR_PAT }}" >> $GITHUB_ENV
-          if [[ "${{ secrets.CR_USER }}" == "" && "${{ secrets.CR_PAT }}" == "" ]]; then
-            echo "::error::Push credential secrets missing."
-            echo "::error::You must set CR_USER & CR_PAT as secrets in your repo settings."
-            echo "::error::See https://github.com/linuxserver/docker-mods/blob/master/README.md for more information/instructions."
-            exit 1
-          fi
       - name: Login to GitHub Container Registry
-        if: ${{ github.ref == format('refs/heads/{0}', env.BRANCH) && env.CR_USER && env.CR_PAT && env.ENDPOINT != 'user/endpoint' }}
+        if: ${{ github.ref == format('refs/heads/{0}', env.BRANCH) && env.ENDPOINT != 'user/endpoint' }}
         run: |
-          echo "${{ secrets.CR_PAT }}" | docker login ghcr.io -u ${{ secrets.CR_USER }} --password-stdin
+          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin
       - name: Push tags to GitHub Container Registry
-        if: ${{ github.ref == format('refs/heads/{0}', env.BRANCH) && env.CR_USER && env.CR_PAT && env.ENDPOINT != 'user/endpoint' }}
+        if: ${{ github.ref == format('refs/heads/{0}', env.BRANCH) && env.ENDPOINT != 'user/endpoint' }}
         run: |
           docker push ghcr.io/${ENDPOINT}:${{ github.sha }}
           docker push ghcr.io/${ENDPOINT}