update dockerfile: add multi-arch and multi-stage

.github/workflows/docker.yml

@@ -7,15 +7,26 @@ jobs:
     name: Push Docker image to Docker Hub
     runs-on: ubuntu-latest
     steps:
-      - name: Check out the repo
+      -
+        name: Check out the repo
         uses: actions/checkout@v2
-      - name: Log in to Docker Hub
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
         uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-      - name: Push to Docker Hub
+      -
+        name: Build and push
         uses: docker/build-push-action@v2
         with:
+          context: .
+          platforms: linux/amd64,linux/arm64
           push: true
           tags: xdbin/beancount-gs:latest

dockerfile

@@ -1,18 +1,23 @@
 # syntax=docker/dockerfile:1
-FROM golang:1.17.3
+FROM golang:1.17.3 AS builder
 
 ENV GO111MODULE=on \
     GOPROXY=https://goproxy.cn,direct \
     GIN_MODE=release \
     PORT=80
 
-# install beancount
-RUN apt-get update || : && apt-get install python3.5 python3-pip -y
-RUN pip3 install beancount -i https://pypi.tuna.tsinghua.edu.cn/simple
-
-WORKDIR /app
+WORKDIR /builder
 COPY . .
 COPY public/icons ./public/default_icons
 RUN go build .
 
+FROM python:latest
+RUN pip3 install beancount -i https://pypi.tuna.tsinghua.edu.cn/simple
+
+WORKDIR /app
+COPY --from=builder ./builder/public ./public
+COPY --from=builder ./builder/config ./config
+COPY --from=builder ./builder/template ./template
+COPY --from=builder ./builder/beancount-gs* ./
+
 EXPOSE 80