add docker pipeline

Author: aottr

.github/workflows/docker-image.yml

@@ -0,0 +1,30 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+
+  build-package:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag ghcr.io/ottrone/dailyottrbot:latest
+
+    - name: Publish Docker image to Github Packages
+      shell: bash
+      env:
+        PAT: ${{ secrets.PAT }}
+      run: |
+        echo $PAT | docker login ghcr.io --username alexottr --password-stdin
+        docker push ghcr.io/ottrone/dailyottrbot:latest
+        docker logout
+
+

Dockerfile

@@ -0,0 +1,12 @@
+FROM node:alpine
+
+RUN mkdir -p /opt/lexbot
+WORKDIR /opt/lexbot
+
+COPY package.json ./
+
+RUN npm install
+
+COPY . .
+
+CMD [ "node", "bot.js" ]