Try to build with Gitea Actions

.gitea/workflows/build.yaml

@@ -0,0 +1,29 @@
+name: Master workflow
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  docker:
+    name: Build Docker image
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Login to Gitea container registry
+      run: |
+        BASE64_AUTH=`echo -n "$CI_REGISTRY_USER:$CI_REGISTRY_PASSWORD" | base64`
+        mkdir -p ~/.docker
+        echo "{\"auths\": {\"$CI_REGISTRY\": {\"auth\": \"$BASE64_AUTH\"}}}" > ~/.docker/config.json                
+      env:
+        CI_REGISTRY: git.jlel.se
+        CI_REGISTRY_USER: nologin
+        CI_REGISTRY_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
+    - name: Build image
+      uses: docker/build-push-action@v4
+      env:
+        ACTIONS_RUNTIME_TOKEN: ''
+      with:
+        push: true
+        tags: git.jlel.se/jlelse/goshort:latest