chore(docker): refactor Dockerfile

refactor Dockerfile

Signed-off-by: kovacs <mritd@linux.com>

Dockerfile

@@ -1,42 +1,62 @@
-FROM golang:1.17-alpine as cloudreve_builder
-
-
-# install dependencies and build tools
-RUN apk update && apk add --no-cache wget curl git yarn build-base gcc abuild binutils binutils-doc gcc-doc zip
-
-WORKDIR /cloudreve_builder
-RUN git clone --recurse-submodules https://github.com/cloudreve/Cloudreve.git
-
-# build frontend
-WORKDIR /cloudreve_builder/Cloudreve/assets
-RUN yarn install --network-timeout 1000000
-RUN yarn run build && find . -name "*.map" -type f -delete
-
-# build backend
-WORKDIR /cloudreve_builder/Cloudreve
-RUN zip -r - assets/build >assets.zip
-RUN tag_name=$(git describe --tags) \
-    && export COMMIT_SHA=$(git rev-parse --short HEAD) \
-    && go build -a -o cloudreve -ldflags " -X 'github.com/HFO4/cloudreve/pkg/conf.BackendVersion=$tag_name' -X 'github.com/HFO4/cloudreve/pkg/conf.LastCommit=$COMMIT_SHA'"
-
-
-# build final image
+# 多阶段构建: 编译发布物
+# 注意: 该阶段除最终发布物外不会影响最终镜像体积, 删除缓存、减少包安装等无意义
+FROM golang:1-alpine AS builder
+
+# 安装基本编译依赖
+RUN set -ex \
+    && apk add build-base bash git yarn zip \
+    && git clone --recursive https://github.com/cloudreve/Cloudreve.git /source
+
+# 编译前端代码
+WORKDIR /source/assets
+
+# 允许通过 `docker build --build-args YARN_REGISTRY=https://xxxx` 覆盖默认仓库地址
+ARG YARN_REGISTRY=https://registry.yarnpkg.com/
+
+# 允许通过 `docker build --build-args GOPROXY=https://goproxy.cn` 添加 go mod 代理
+ARG GOPROXY=""
+
+# 暂不确定未来 alpine 内的 Node 版本是否影响最终编译结果, 故暂时增加打印输出
+RUN set -ex \
+    && echo "Node Version: $(node -v)" \
+    && sed -i -e "s@https://registry.yarnpkg.com/@${YARN_REGISTRY}@g" yarn.lock \
+    && yarn install \
+    && yarn run build \
+    && find . -name "*.map" -type f -delete
+
+# 编译后端代码
+WORKDIR /source
+
+# assets.zip: 用于 go:embed 嵌入, 不可修改文件名
+RUN set -ex \
+    && zip -r - assets/build > assets.zip \
+    && go build -trimpath -o /cloudreve.bin -ldflags \
+            "-w -s \
+             -X github.com/cloudreve/Cloudreve/v3/pkg/conf.BackendVersion=$(git describe --tags) \
+             -X github.com/cloudreve/Cloudreve/v3/pkg/conf.LastCommit=$(git rev-parse --short HEAD)"
+
+# 多阶段构建: 构建最终镜像 
 FROM alpine:latest
 
-WORKDIR /cloudreve
+RUN set -ex \
+    && apk add --no-cache tzdata bash \
+    && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
+    && echo "Asia/Shanghai" > /etc/timezone
 
-RUN apk update && apk add --no-cache tzdata
+# 从编译阶段镜像复制可执行文件
+COPY --from=builder /cloudreve.bin /usr/bin/cloudreve
 
-# we using the `Asia/Shanghai` timezone by default, you can do modification at your will
-RUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
-    && echo "Asia/Shanghai" > /etc/timezone
+# 复制启动脚本, 该脚本负责完成权限修复等预处理动作
+COPY docker-entrypoint.sh /docker-entrypoint.sh
 
-COPY --from=cloudreve_builder /cloudreve_builder/Cloudreve/cloudreve ./
+# 默认文件存储位置
+VOLUME /data
 
-# prepare permissions and aria2 dir
-RUN chmod +x ./cloudreve && mkdir -p /data/aria2 && chmod -R 766 /data/aria2
+# 切换运行目录, 为未来可能的自动识别运行目录做准备
+WORKDIR /data
 
-EXPOSE 5212
-VOLUME ["/cloudreve/uploads", "/cloudreve/avatar", "/data"]
+# 镜像默认的开放端口, 它仅作为标识意义, 不干扰实际运行
+EXPOSE 5212/TCP
 
-ENTRYPOINT ["./cloudreve"]
+# 除非使用明确的 entrypint 覆盖, 否则默认执行修复脚本并启动
+ENTRYPOINT ["/docker-entrypoint.sh"]

docker-entrypoint.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+set -e
+
+# 创建 aria2 共享目录
+mkdir -p /data/aria2
+
+# 确保 aria2 可以被低权限用户写入
+chmod -R 766 /data/aria2
+
+# 强制刷新二进制文件
+rm -f /data/bin
+cp /usr/bin/cloudreve /data/.bin
+
+# 使用 exec 执行并拼接外部 CMD 指令参数
+exec /data/.bin $@