Refactor Docker build and automatically push images (#41)

Refactor Docker build / Add GitHub workflow for creating and publishing Docker image

.dockerignore

@@ -1,3 +1,7 @@
-node_modules
+node_modules/
 npm-debug.log
-test
+test/
+conf/
+db/
+.git/
+.github/

.github/workflows/docker.yml

@@ -0,0 +1,46 @@
+name: Create and publish Docker image
+on:
+  push:
+    branches:
+      - 'master'
+    tags:
+      - '*'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,18 @@
+# syntax=docker/dockerfile:1.3
+FROM node:16-alpine AS builder
+COPY --chown=1000:1000 . /fredy
+WORKDIR  /fredy
+USER 1000
+RUN yarn install
+RUN yarn run prod
+
+FROM node:16-alpine
+COPY --from=builder --chown=1000:1000 /fredy /fredy
+RUN mkdir /db /conf && \
+  chown 1000:1000 /db /conf && \
+  ln -s /db /fredy/db && ln -s /conf /fredy/conf
+EXPOSE 9998
+USER 1000
+VOLUME [ "/conf", "/db" ]
+WORKDIR  /fredy
+CMD node index.js --no-daemon

build/Dockerfile

@@ -1,33 +0,0 @@
-FROM alpine:latest AS build
-# use given repository, default below:
-ARG repo=https://github.com/orangecoding/fredy.git
-
-RUN mkdir -p /usr/src/
-#Install Software
-RUN apk add --update nodejs npm git
-
-# Output used repository
-RUN echo "Cloning from $repo"
-
-RUN cd /usr/src && git clone $repo
-
-RUN ln -s /usr/src/fredy/conf/ /conf
-
-# create db folder
-RUN mkdir /usr/src/fredy/db/
-
-RUN ln -s /usr/src/fredy/db/ /db
-
-RUN npm i -g yarn
-
-RUN cd /usr/src/fredy/ && yarn
-
-WORKDIR  /usr/src/fredy
-
-RUN yarn run prod
-
-EXPOSE 9998
-
-VOLUME [ "/conf", "/db" ]
-# --no-daemon is required for keeping Container alive
-CMD node index.js --no-daemon

docker-compose.yml

@@ -4,10 +4,8 @@ services:
     container_name: fredy
     # build from empty build folder to reduce size of image
     build:
-      context: ./build
+      context: .
       dockerfile: Dockerfile
-      args:
-        repo: https://github.com/orangecoding/fredy.git
     image: fredy/fredy
     # map existing config and database
     volumes: