Merge pull request #24 from jwetzell/feat/docker

add docker image

.dockerignore

@@ -0,0 +1,5 @@
+Dockerfile
+.github
+.vscode
+README.md
+LICENSE

.github/workflows/publish-showbridge-image.yaml

@@ -0,0 +1,46 @@
+name: Publish showbridge docker image
+on:
+  push:
+    branches:
+      - 'main'
+    tags:
+      - 'v**'
+jobs:
+  build-cli-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@c7c53464625b32c7a7e944ae62b3e17d2b600130 # v3.7.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@5e57cd118135c172c3672efd75eb46360885c0ef # v3.6.0
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Setup Docker metadata
+        id: meta
+        uses: docker/metadata-action@c299e40c65443455700f0fdfc63efafe5b349051 # v5.10.0
+        with:
+          images: |
+            jwetzell/showbridge
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+
+      - name: Build and push
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
+        with:
+          push: true
+          context: ./
+          file: ./Dockerfile
+          tags: jwetzell/showbridge:main
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          platforms: linux/amd64,linux/arm64,linux/arm/v7

Dockerfile

@@ -0,0 +1,15 @@
+ARG GO_VERSION=1.25.5
+FROM golang:${GO_VERSION}-alpine AS build
+RUN apk --no-cache add ca-certificates tzdata
+WORKDIR /build
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build ./cmd/showbridge
+
+FROM scratch
+WORKDIR /app
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+COPY --from=build /usr/share/zoneinfo /usr/share/zoneinfo
+COPY --from=build /build/showbridge /app/showbridge
+ENTRYPOINT [ "/app/showbridge" ]