add container step

.dockerignore

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+/target
+.forgejo
+README.md

.forgejo/workflows/build-container.yaml

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+name: Build and push Docker image
+
+on:
+  push:
+
+jobs:
+  build-and-publish:
+    runs-on: docker
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build latest
+        uses: https://codeberg.org/umglurf/kaniko-action@main
+        with:
+          cache: true
+          cache_repo: ${{ vars.REGISTRY_URL }}/${{ github.repository }}/cache
+          credentials: |
+            ${{ vars.REGISTRY_URL }}=${{ secrets.REGISTRY_USERNAME }}:${{ secrets.REGISTRY_TOKEN }}
+          destinations: |
+            ${{ vars.REGISTRY_URL }}/${{ github.repository }}:latest
+          push: 'true'
+        if: github.ref == 'refs/heads/master'
+      - name: Build ref
+        uses: https://codeberg.org/umglurf/kaniko-action@main
+        with:
+          cache: true
+          cache_repo: ${{ vars.REGISTRY_URL }}/${{ github.repository }}/cache
+          credentials: |
+            ${{ vars.REGISTRY_URL }}=${{ secrets.REGISTRY_USERNAME }}:${{ secrets.REGISTRY_TOKEN }}
+          destinations: |
+            ${{ vars.REGISTRY_URL }}/${{ github.repository }}:${{ github.ref_name }}
+          push: 'true'
+        if: github.ref != 'refs/heads/master'

Dockerfile

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+FROM rustlang/rust:nightly-alpine AS build
+WORKDIR /usr/src/serverman
+COPY . .
+RUN apk add --no-cache musl-dev && \
+    cargo install --path .
+
+FROM rustlang/rust:nightly-alpine
+COPY --from=build /usr/local/cargo/bin/serverman /usr/local/bin/serverman
+ENTRYPOINT [ "serverman" ]