docker - 无法让 dep 和 dockerize 在 docker-compose 中一起工作(但它们是分开工作的)。为什么？

Question

我有一个奇怪的情况，当我使用 dockerize 等待数据库等准备就绪，并使用 dep 加载时，我的 docker-compose 构建将无法完成我的 Go 依赖项。

这里是 docker-compose.yml 的摘录(除了下面所示的 golang 容器外，还有 mosquitto、postgres 和 python 容器)

version '3.3'
services:

   foobar_container:
     image: foobar_image
     container_name: foobar
     build:
      context: ./build_foobar
      dockerfile: Dockerfile.foobar
     #command: dockerize -wait tcp://mosquitto:1883 -wait tcp://postgres:5432 -timeout 200s /go/src/foobar/main
     volumes:
       - ./foobar:/go
     stdin_open: true
     tty: true
     external_links:
       - mosquitto
       - postgres
     ports:
       - 1833
       - 8001
     depends_on:
       - mosquitto
       - postgres

这是我的 Dockerfile.foobar

FROM golang:latest
 WORKDIR /go
 RUN apt-get update && apt-get install -y wget mosquitto-clients net-tools
 ENV DOCKERIZE_VERSION v0.6.0
 RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
   && tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
   && rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
 ADD foobar.sh /foobar.sh
 #RUN go build main.go
 RUN chmod +x /foobar.sh

这是我的构建脚本 foobar.sh:

#!/bin/bash

mkdir -p /go/bin # required directory that may have been overwriten by docker-compose `volumes` param
echo "++++++++ Downloading Golang dependencies ... ++++++++"
cd /go/src/foobar
curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
echo "++++++++ Installing Golang dependencies ... ++++++++"
dep ensure
echo "++++++++ Testing MQTT message broker ... ++++++++"
until [[ $(mosquitto_sub -h "mosquitto" -t '$SYS/#' -C 1 | cut -c 1-9) = "mosquitto" ]]; do
    echo "++++++++ Message broker is not ready. Waiting one second... ++++++++"
    sleep 1
done
echo "++++++++ Building application... ++++++++" 
go build main.go

如果我取消注释 docker-compose.yml 的 command 行，我的 foobar.sh 将不会运行通过 curl 行。没有错误输出，执行只是停止。如果我从 curl 开始评论，并取消注释 command 行，我可以设置完成(但是 foobar 容器需要我手动启动) .我的 python 容器(取决于所有 postgres、go 和 mosquitto 容器)设置正常。

出了什么问题？

Answer 1

我发现了几件事，首先是执行顺序，您必须确保首先执行 foobar.sh。作为另一个建议，我不会使用卷覆盖容器内的整个 /go 文件夹，而是使用另一个子文件夹，例如 /go/github.com/my-project .我根据您的配置使用此配置运行了一个应用程序:

build_foobar/Dockerfile.foobar:

FROM golang:latest
WORKDIR /go
RUN apt-get update && apt-get install -y wget mosquitto-clients net-tools
ENV DOCKERIZE_VERSION v0.6.0
RUN wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
        && tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz \
        && rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
ADD foobar.sh /foobar.sh
# RUN go build main.go
RUN chmod +x /foobar.sh

build_foobar/foobar.sh:

#!/bin/bash

# mkdir -p /go/bin # required directory that may have been overwriten by docker-compose `volumes` param
echo "++++++++ Downloading Golang dependencies ... ++++++++"
cd /go/src/foobar
curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
echo "++++++++ Installing Golang dependencies ... ++++++++"
dep ensure
echo "++++++++ Testing MQTT message broker ... ++++++++"
until [[ $(mosquitto_sub -h "mosquitto" -t '$SYS/#' -C 1 | cut -c 1-9) = "mosquitto" ]]; do
    echo "++++++++ Message broker is not ready. Waiting one second... ++++++++"
    sleep 1
done
echo "++++++++ Building application... ++++++++" 
go build main.go

dockerize -wait tcp://mosquitto:1883 -wait tcp://postgres:5432 -timeout 200s /go/src/foobar/main

foobar/main.go:放置你的应用主文件

docker-compose.yml:

version: '3.3'
services:
  foobar_container:
    image: foobar_image
    container_name: foobar
    build:
      context: ./build_foobar
      dockerfile: Dockerfile.foobar
    # command: dockerize -wait tcp://mosquitto:1883 -wait tcp://postgres:5432 -timeout 200s /go/src/foobar/main
    # command: /bin/bash
    command: /foobar.sh
    volumes:
      - ./foobar:/go/src/foobar
    stdin_open: true
    tty: true
    external_links:
      - mosquitto
      - postgres
    depends_on:
      - mosquitto
      - postgres
    ports:
      - 1833
      - 8001
  mosquitto:
    image: eclipse-mosquitto
  postgres:
    image: postgres