[CI] don't try to login without credentials

.github/workflows/containers.yml

@@ -9,6 +9,7 @@ env:
   run-unit-tests: ${{ secrets.RUN_UNIT_TESTS != null }}
   docker-hub-credentials: ${{ secrets.DOCKER_HUB_USERNAME != null && secrets.DOCKER_HUB_TOKEN != null }}
   ghcr-credentials: ${{ secrets.GHCR_USERNAME != null && secrets.GHCR_TOKEN != null }}
+  gitea-credentials: ${{ secrets.GITEA_USERNAME != null && secrets.GITEA_TOKEN != null }}
   docker-hub-namespace: ${{ secrets.DOCKER_HUB_NAMESPACE || github.repository_owner }}
   docker-hub-namespace-upstream: ${{ secrets.DOCKER_HUB_NAMESPACE_UPSTREAM || 'zmkfirmware' }}
   ghcr-namespace: ${{ github.repository_owner }}
@@ -39,7 +40,7 @@ jobs:
       json: ${{ steps.import.outputs.json }}
     steps:
       - name: Install yaml2json
-        run: python3 -m pip install remarshal
+        run: pip3 install remarshal
       - name: Checkout
         uses: actions/checkout@v3
       - name: Import from architectures.yml
@@ -106,6 +107,14 @@ jobs:
           registry: ghcr.io
           username: ${{ secrets.GHCR_USERNAME }}
           password: ${{ secrets.GHCR_TOKEN }}
+      - name: Login to Gitea
+        id: docker-hub-login
+        if: ${{ env.gitea-credentials == 'true' }}
+        uses: docker/login-action@v2
+        with:
+          registry: git.sporq.de
+          username: ${{ secrets.GITEA_USERNAME }}
+          password: ${{ secrets.GITEA_TOKEN }}
       - name: Define paths
         id: paths
         env:
@@ -212,6 +221,14 @@ jobs:
           registry: ghcr.io
           username: ${{ secrets.GHCR_USERNAME }}
           password: ${{ secrets.GHCR_TOKEN }}
+      - name: Login to Gitea
+        id: docker-hub-login
+        if: ${{ env.gitea-credentials == 'true' }}
+        uses: docker/login-action@v2
+        with:
+          registry: git.sporq.de
+          username: ${{ secrets.GITEA_USERNAME }}
+          password: ${{ secrets.GITEA_TOKEN }}
       - name: Define repositories
         id: repositories
         shell: bash
@@ -559,6 +576,7 @@ jobs:
         run: sudo apt-get install -y skopeo
       - name: Login to GitHub Container Registry
         id: ghcr-login
+        if: ${{ env.ghcr-credentials == 'true' }}
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
@@ -566,10 +584,19 @@ jobs:
           password: ${{ secrets.GHCR_TOKEN }}
       - name: Login to Docker Hub
         id: docker-hub-login
+        if: ${{ env.docker-hub-credentials == 'true' }}
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - name: Login to Gitea
+        id: docker-hub-login
+        if: ${{ env.gitea-credentials == 'true' }}
+        uses: docker/login-action@v2
+        with:
+          registry: git.sporq.de
+          username: ${{ secrets.GITEA_USERNAME }}
+          password: ${{ secrets.GITEA_TOKEN }}
       - name: Release (pull candidate, tag, push)
         env:
           DHNS: ${{ env.docker-hub-namespace }}
@@ -637,6 +664,7 @@ jobs:
         run: sudo apt-get install -y skopeo
       - name: Login to GitHub Container Registry
         id: ghcr-login
+        if: ${{ env.ghcr-credentials == 'true' }}
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
@@ -644,10 +672,19 @@ jobs:
           password: ${{ secrets.GHCR_TOKEN }}
       - name: Login to Docker Hub
         id: docker-hub-login
+        if: ${{ env.docker-hub-credentials == 'true' }}
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_HUB_USERNAME }}
           password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - name: Login to Gitea
+        id: docker-hub-login
+        if: ${{ env.gitea-credentials == 'true' }}
+        uses: docker/login-action@v2
+        with:
+          registry: git.sporq.de
+          username: ${{ secrets.GITEA_USERNAME }}
+          password: ${{ secrets.GITEA_TOKEN }}
       - name: Release (pull candidate, tag, push)
         env:
           DHNS: ${{ env.docker-hub-namespace }}

Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:focal-20220113 AS common
+FROM debian:bookworm-slim AS common
 
 CMD ["/bin/bash"]