docker image and Github Actions to build image

.dockerignore

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+node_modules/
+dist/
+out/

.github/workflows/on-main.yaml

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+name: Docker Compose Build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [15.x]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: yarn
+      - name: Linter check
+        run: yarn lint
+  build:
+    name: Run docker build
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Get the version
+        id: vars
+        run: echo ::set-output name=sha::$(echo ${GITHUB_SHA:0:7})
+      - name: Run docker build
+        run: make docker-build
+      - name: Tag docker image
+        run: docker tag vulcanize/watcher-ts ghcr.io/vulcanize/watcher-ts:${{steps.vars.outputs.sha}}
+      - name: Docker Login
+        run: echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u vulcanize --password-stdin
+      - name: Docker Push
+        run: docker push ghcr.io/vulcanize/watcher-ts:${{steps.vars.outputs.sha}}
+

.github/workflows/on-pr.yaml

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+name: Docker Build
+
+on: [pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [15.x]
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: yarn
+      - name: Linter check
+        run: yarn lint
+  build:
+    name: Run docker build
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run docker build
+        run: make docker-build

.github/workflows/publish.yaml

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+name: Publish Docker image
+on:
+  release:
+    types: [published]
+jobs:
+  docker_publish:
+    name: Push Docker image to Github Hub
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get the version
+        id: vars
+        run: |
+          echo ::set-output name=sha::$(echo ${GITHUB_SHA:0:7})
+          echo ::set-output name=tag::$(echo ${GITHUB_REF#refs/tags/})
+      - name: Docker Login to Registry
+        run: echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u vulcanize --password-stdin
+      - name: Docker Pull
+        run: docker pull ghcr.io/vulcanize/watcher-ts:${{steps.vars.outputs.sha}}
+      - name: Tag docker image
+        run: docker tag ghcr.io/vulcanize/watcher-ts:${{steps.vars.outputs.sha}} ghcr.io/vulcanize/watcher-ts:${{steps.vars.outputs.tag}}
+      - name: Docker Push to Github Hub
+        run: docker push ghcr.io/vulcanize/watcher-ts:${{steps.vars.outputs.tag}}
+

Dockerfile

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+FROM node:15.3.0-alpine3.10
+
+WORKDIR /app
+
+COPY . .
+
+RUN apk --update --no-cache add git && yarn
+

Makefile

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+## Build docker image
+.PHONY: docker-build
+docker-build:
+	docker build -t vulcanize/watcher-ts .