go mode init docker-starter
goctl api new app
go mod tidycd app
goctl docker --port 8888FROM golang:alpine AS builder
LABEL stage=gobuilder
ENV CGO_ENABLED 0
ENV GOPROXY https://goproxy.cn,direct
WORKDIR /build
ADD go.mod go.sum ./
RUN --mount=type=cache,target=/go/pkg/mod,sharing=locked \
go mod download
COPY . .
# 构建 go app, 并将构建结果，写到容器 build 目录下
RUN go build -ldflags="-s -w" -o ./docker-starter ./app
# 构建配置文件 & 复制到容器内
FROM bhgedigital/envsubst as config
ARG ENVFILE=preview.env
WORKDIR /build
COPY ./app/etc/templates/ ./etc
RUN export $(cat ./etc/${ENVFILE} | xargs) && \
envsubst < ./etc/config.tmpl >> ./etc/app-api.yaml
# 将应用跑在 alpine 上
FROM alpine:3.16
WORKDIR /app
COPY --from=config /build/etc/app-api.yaml ./etc/app-api.yaml
COPY --from=builder /build/docker-starter ./
RUN chmod +x ./docker-starter
EXPOSE 8888
ENTRYPOINT ["/app/docker-starter"]BUILD_DEST_DIR ?= build
docker-build:
docker buildx build -f ./app/Dockerfile -t docker-starter:001 .
build-app:
go build -ldflags="-s -w" -o ./{BUILD_DEST_DIR}/docker-starter ./app
.PHONY: docker-build build-appmake docker-builddocekr images 即可看到生成的镜像
docker run -itd --name docker-starter -p 8888:8888 docker-starter:001
# 查看当前运行的容器
docker container ls -acurl http://localhost:8888/for/you
> {"message":"you"}# 获取容器 id
docker container ls -a
# 查看容器日志
docker logs <container id>docker exec -it <container id> ls -al
# alpine 中的 shell 叫 ash
docker exec it <container id> ash
# 进入容器内部, 修改配置
vi ./etc/app-api.yaml
# 保存后退出容器，查看变更，会列出容器内文件的变更
docker diff <container id>
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