chore: add Docker image

See #156, thanks @odiroot

.github/workflows/docker.yml

@@ -0,0 +1,72 @@
+name: Publish Docker image
+
+on:
+  push:
+    tags: [ 'v*' ]
+    branches: [ "master" ]
+  pull_request:
+    branches: [ 'master' ]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Install the cosign tool except on PR
+      - name: Install cosign
+        if: github.event_name != 'pull_request'
+        uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 #v3.5.0
+        with:
+          cosign-release: 'v2.2.4'
+
+      # Set up BuildKit Docker container builder to be able to build
+      # multi-platform images and export cache
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0
+
+      # Login against a Docker registry except on PR
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Extract metadata (tags, labels) for Docker
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      # Sign the resulting Docker image digest except on PRs.
+      - name: Sign the published Docker image
+        if: ${{ github.event_name != 'pull_request' }}
+        env:
+          TAGS: ${{ steps.meta.outputs.tags }}
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}
+        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}

Dockerfile

@@ -0,0 +1,19 @@
+FROM alpine:3.20 AS build
+
+RUN apk -U --no-cache add go alsa-lib-dev libogg-dev libvorbis-dev
+
+WORKDIR /src
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN go build -v ./cmd/daemon
+
+FROM alpine:3.20
+
+RUN apk -U --no-cache add libpulse avahi libgcc gcompat alsa-lib
+
+COPY --from=build /src/daemon /usr/bin/go-librespot
+
+CMD ["/usr/bin/go-librespot", "--config_dir", "/config"]

README.md

@@ -19,6 +19,13 @@ the [latest release](https://github.com/devgianlu/go-librespot/releases/latest).
 Development prebuilt binaries are also available
 as [GitHub Actions artifacts](https://github.com/devgianlu/go-librespot/blob/249b8fee709e2d08fe9c39a16ad0fc4b737cb967/.github/workflows/release.yml#L62).
 
+### Using Docker
+
+A lightweight Docker image for go-librespot is available
+on the [GitHub Container Registry](https://github.com/devgianlu/go-fileshare/pkgs/container/go-fileshare).
+
+An example Docker Compose configuration for PulseAudio is available [here](/docker-compose.pulse.yml).
+
 ### Building from source
 
 To build from source the following prerequisites are necessary:

docker-compose.pulse.yml

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+services:
+  daemon:
+    image: ghcr.io/devgianlu/go-librespot
+    build: .
+    network_mode: host
+    userns_mode: keep-id
+    volumes:
+      - ~/.config/go-librespot:/config
+      - ~/.config/pulse/cookie:/pulse_cookie:ro
+      - /run/user/1000/pulse/native:/pulse_native # Replace 1000 with your UID
+    environment:
+      PULSE_SERVER: "unix:/pulse_native"
+      PULSE_COOKIE: "/pulse_cookie"