如何根据用户输入在 docker compose 文件中设置 docker 映像名称？

Question

升级 docker-compose 文件时，我想根据用户输入设置服务映像。如果输入图像中没有任何标签，我想设置最新标签。如何做到这一点？

例如，我有这个 docker-compose 文件-

    version: '3.7'

    services:
         ping:
           container_name: svc_name
           image: image_name:tag_name
           ports:
             - 8080:8080
           command: serve
           environment:
             - CONSUL_URL=consul_dev:8500
             - CONSUL_PATH=ping
           tty: true

在这里，我想在构建撰写文件时从用户输入中设置image_name:tag_name。必须有更多服务，所以我必须指定我在哪个服务上获取输入图像。

Answer 1

我解决这个问题的方法是：

read -p "Please enter the PING service image name: " ping_image_name

if [ -z "${ping_image_name}" ]; then
  exit 1
fi

read -p "Please enter the OTHER service image name: " other_image_name

if [ -z "${other_image_name}" ]; then
  exit 1
fi

ping_image_name="${ping_image_name-default_ping_image_name}" \
other_image_name="${other_image_name-default_other_image_name}" \
docker-compose build ...command arguments...

    version: '3.7'

    services:
         ping:
           container_name: svc_name
           image: ${ping_image_name}
           ports:
             - 8080:8080
           command: serve
           environment:
             - CONSUL_URL=consul_dev:8500
             - CONSUL_PATH=ping
           tty: true

         other:
           container_name: svc_name
           image: ${ping_image_name}