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docker/README.md

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+# Docker Build and Push
+
+<!-- action-docs-description source="action.yml" -->
+## Description
+
+Build a Docker image and push it to the Gitea container registry
+<!-- action-docs-description source="action.yml" -->
+
+<!-- action-docs-inputs source="action.yml" -->
+## Inputs
+
+| name | description | required | default |
+| --- | --- | --- | --- |
+| `REGISTRY` | <p>Container registry hostname</p> | `false` | `gitea.pixelparasol.com` |
+| `REGISTRY_USERNAME` | <p>Registry login username</p> | `false` | `deac` |
+| `REGISTRY_TOKEN` | <p>Registry login token or password</p> | `true` | `""` |
+| `IMAGE_PATH` | <p>Full registry image path (e.g. gitea.pixelparasol.com/stat-tackler/stat-tackler-api)</p> | `true` | `""` |
+| `IMAGE_TAG` | <p>Tag to apply in addition to latest (e.g. stage-<sha>)</p> | `true` | `""` |
+| `PLATFORMS` | <p>Comma-separated buildx platform list</p> | `false` | `linux/amd64,linux/arm/v7,linux/arm64` |
+| `ARTIFACT_NAME` | <p>Name of the build artifact to download</p> | `false` | `dist` |
+| `ARTIFACT_PATH` | <p>Destination path for the downloaded artifact</p> | `false` | `dist` |
+| `TAG_LATEST` | <p>Also tag and push the image as latest</p> | `false` | `false` |
+| `WORKING_DIRECTORY` | <p>Working directory for the Docker build</p> | `false` | `.` |
+<!-- action-docs-inputs source="action.yml" -->
+
+<!-- action-docs-runs source="action.yml" -->
+## Runs
+
+This action is a `composite` action.
+<!-- action-docs-runs source="action.yml" -->

docker/action.yml

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+name: Docker Build and Push
+description: Build a Docker image and push it to the Gitea container registry
+inputs:
+  REGISTRY:
+    description: "Container registry hostname"
+    default: "gitea.pixelparasol.com"
+  REGISTRY_USERNAME:
+    description: "Registry login username"
+    default: "deac"
+  REGISTRY_TOKEN:
+    description: "Registry login token or password"
+    required: true
+  IMAGE_PATH:
+    description: "Full registry image path (e.g. gitea.pixelparasol.com/stat-tackler/stat-tackler-api)"
+    required: true
+  IMAGE_TAG:
+    description: "Tag to apply in addition to latest (e.g. stage-<sha>)"
+    required: true
+  PLATFORMS:
+    description: "Comma-separated buildx platform list"
+    default: "linux/amd64,linux/arm/v7,linux/arm64"
+  ARTIFACT_NAME:
+    description: "Name of the build artifact to download"
+    default: "dist"
+  ARTIFACT_PATH:
+    description: "Destination path for the downloaded artifact"
+    default: "dist"
+  TAG_LATEST:
+    description: "Also tag and push the image as latest"
+    default: "false"
+  WORKING_DIRECTORY:
+    description: "Working directory for the Docker build"
+    default: "."
+
+runs:
+  using: composite
+  steps:
+    - name: Login to Gitea Container Registry
+      uses: docker/login-action@v3
+      with:
+        registry: ${{ inputs.REGISTRY }}
+        username: ${{ inputs.REGISTRY_USERNAME }}
+        password: ${{ inputs.REGISTRY_TOKEN }}
+
+    - name: Download Build Artifact
+      uses: actions/download-artifact@v3
+      with:
+        name: ${{ inputs.ARTIFACT_NAME }}
+        path: ${{ inputs.ARTIFACT_PATH }}
+
+    - name: Docker Build and Push
+      shell: sh
+      run: |
+        TAGS="-t ${{ inputs.IMAGE_PATH }}:${{ inputs.IMAGE_TAG }}"
+        if [ "${{ inputs.TAG_LATEST }}" = "true" ]; then
+          TAGS="$TAGS -t ${{ inputs.IMAGE_PATH }}:latest"
+        fi
+        docker buildx build -f ${{ inputs.WORKING_DIRECTORY }}/Dockerfile ${{ inputs.WORKING_DIRECTORY }} \
+          --platform ${{ inputs.PLATFORMS }} \
+          --push \
+          $TAGS