Create Dockerfile and Actions workflow

.github/workflows/docker.yml

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+name: "Automated release"
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish-docker:
+    name: "Build and publish Docker image on ghcr.io"
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout repository"
+        uses: "actions/checkout@v2"
+
+      - name: "Find the release semantic version"
+        id: "semver"
+        uses: "Steffo99/actions-semver@v0.3.4"
+        with:
+          string: "${{ github.ref_name }}"
+
+      - name: "Setup Buildx"
+        uses: "docker/setup-buildx-action@v2"
+
+      - name: "Login to GitHub Containers"
+        uses: "docker/login-action@v2"
+        with:
+          registry: "ghcr.io"
+          username: "${{ github.repository_owner }}"
+          password: "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: "Find the lowercase name of the repository"
+        id: "reponame"
+        uses: "ASzc/change-string-case-action@v2"
+        with:
+          string: "${{ github.repository }}"
+
+      - name: "Build and push the Docker image"
+        uses: "docker/build-push-action@v3"
+        with:
+          tags: >-
+            ghcr.io/${{ steps.reponame.outputs.lowercase }}:${{ steps.semver.outputs.precedence }},
+            ghcr.io/${{ steps.reponame.outputs.lowercase }}:${{ steps.semver.outputs.core }},
+            ghcr.io/${{ steps.reponame.outputs.lowercase }}:${{ steps.semver.outputs.pair }},
+            ghcr.io/${{ steps.reponame.outputs.lowercase }}:${{ steps.semver.outputs.major }},
+            ghcr.io/${{ steps.reponame.outputs.lowercase }}:latest
+          push: true
+
+      - name: "Create release"
+        uses: "ncipollo/release-action@v1.10.0"
+        with:
+          draft: true
+          generateReleaseNotes: true

Dockerfile

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+FROM rust:1.65 AS labels
+
+LABEL org.opencontainers.image.title="Distributed Arcade"
+LABEL org.opencontainers.image.description="Fast and simple scoreboard service for games"
+LABEL org.opencontainers.image.licenses="AGPL-3.0-or-later"
+LABEL org.opencontainers.image.url="https://github.com/Steffo99/distributed-arcade"
+LABEL org.opencontainers.image.authors="Stefano Pigozzi <me@steffo.eu>"
+
+
+FROM labels AS files
+
+WORKDIR /usr/src/distributed_arcade
+COPY . .
+
+
+FROM files AS install
+
+RUN cargo install --path . --all-features --bins
+
+
+FROM install AS environment
+
+ENV RUST_LOG "warn,distributed_arcade=info"