在Docker容器中针对Localstack运行Shell脚本

Question

我一直在使用localstack来针对本地开发服务。我刚刚通过运行他们的码头工人形象docker run --rm -p 4567-4583:4567-4583 -p 8080:8080 localstack/localstack

然后，我手动运行一个小脚本来设置我的S3存储桶，SQS队列等。

现在，我想让其他人更容易做到这一点，所以我想只添加一个Dockerfile和docker-compose.yml文件。不幸的是，当我尝试启动并运行它时，使用时出现docker-compose up一个错误，即安装脚本中的命令无法连接到localstack服务。

make_bucket failed: s3://localbucket Could not connect to the endpoint URL: "http://localhost:4572/localbucket"

Dockerfile：

FROM localstack/localstack

#since this is just local dev set up, localstack doesn't require 
anything specific here.
ENV AWS_DEFAULT_REGION='[useast1]'
ENV AWS_ACCESS_KEY_ID='[lloyd]'
ENV AWS_SECRET_ACCESS_KEY='[christmas]'

COPY bin/localSetup.sh /localSetup.sh
COPY fixtures/notifications.json /notifications.json
RUN ["chmod", "+x", "/localSetup.sh"]
RUN pip install awscli

# expose service & web dashboard ports
EXPOSE 4567-4582 8080

ENTRYPOINT ["/localSetup.sh"]

docker-compose.yml

version: '3'
services:
  localstack:
    build: .
    ports:
      - "8080:8080"
      - "4567-4582:4567-4582"

localSetup.sh

#!/bin/bash

aws --endpoint-url=http://localhost:4572 s3 mb s3://localbucket
#additional similar calls but left off for brevity

我曾尝试在脚本命令中切换localhost到127.0.0.1，但最终出现相同的错误。我可能在这里想念一些愚蠢的东西。

Answer 1

当 localstack 全新启动时，还有另一种创建自定义 AWS 资源的方法。由于您已经有一个用于资源的 bash 脚本，因此您只需将脚本卷安装到/docker-entrypoint-initaws.d/. 所以我的 composefile 将是：

localstack:
    image: localstack/localstack:latest
    container_name: localstack_aws
ports:
      - '4563-4599:4563-4599'
      - '8055:8080'
environment:
      - SERVICES=s3
      - DEFAULT_REGION=us-east-1
volumes:
      - './localSetup.sh:/docker-entrypoint-initaws.d/make-s3.sh'

此外，我宁愿awslocal过aws --endpoint在bash脚本，因为它充分利用凭据工作和端点为您服务。

Answer 2

尝试将主机名添加到 docker-compose 文件并编辑入口点文件以反映该主机名。

docker-compose.yml

version: '3'
services:
  localstack:
    build: .
    hostname: localstack
    ports:
      - "8080:8080"
      - "4567-4582:4567-4582"

本地安装程序

#!/bin/bash

aws --endpoint-url=http://localstack:4572 s3 mb s3://localbucket

这是我docker-compose-dev.yaml用来测试使用 localstack 的应用程序的。我使用了该命令docker-compose -f docker-compose-dev.yaml up，我也使用了与您相同的命令localSetup.sh。

version: '3'
services:

  localstack:
    image: localstack/localstack
    hostname: localstack
    ports:
      - "4567-4584:4567-4584"
      - "${PORT_WEB_UI-8082}:${PORT_WEB_UI-8082}"
    environment:
      - SERVICES=s3
      - DEBUG=1
      - DATA_DIR=${DATA_DIR- }
      - PORT_WEB_UI=${PORT_WEB_UI- }
      - DOCKER_HOST=unix:///var/run/docker.sock
    volumes:
      - "${TMPDIR:-/tmp/localstack}:/tmp/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"
    networks:
      - backend

  sample-app:
    image: "sample-app/sample-app:latest"
    networks:
      - backend
    links:
      - localstack
    depends_on:
      - "localstack"

networks: 
  backend:
    driver: 'bridge'