Log in to GHCR in publish workflow

Author: samsimpson1

.github/workflows/publish.yaml

@@ -10,6 +10,12 @@ jobs:
       packages: write
       id-token: write
     steps:
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@4907a6ddec9925e35a0a9e82d7399ccc52663121 # v4.1.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           ref: main