mirror of
https://github.com/yeasy/docker_practice.git
synced 2024-11-14 10:33:38 +00:00
34 lines
666 B
Go
34 lines
666 B
Go
|
# SHELL 指令
|
|||
|
|
|
|||
|
|
格式：`SHELL ["executable", "parameters"]`
|
|||
|
|
|
|||
|
|
`SHELL` 指令可以指定 `RUN` `ENTRYPOINT` `CMD` 指令的 shell，Linux 中默认为 `["/bin/sh", "-c"]`
|
|||
|
|
|
|||
|
|
```docker
|
|||
|
|
SHELL ["/bin/sh", "-c"]
|
|||
|
|
|
|||
|
|
RUN lll ; ls
|
|||
|
|
|
|||
|
|
SHELL ["/bin/sh", "-cex"]
|
|||
|
|
|
|||
|
|
RUN lll ; ls
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
两个 `RUN` 运行同一命令，第二个 `RUN` 运行的命令会打印出每条命令并当遇到错误时退出。
|
|||
|
|
|
|||
|
|
当 `ENTRYPOINT` `CMD` 以 shell 格式指定时，`SHELL` 指令所指定的 shell 也会成为这两个指令的 shell
|
|||
|
|
|
|||
|
|
```docker
|
|||
|
|
SHELL ["/bin/sh", "-cex"]
|
|||
|
|
|
|||
|
|
# /bin/sh -cex "nginx"
|
|||
|
|
ENTRYPOINT nginx
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
```docker
|
|||
|
|
SHELL ["/bin/sh", "-cex"]
|
|||
|
|
|
|||
|
|
# /bin/sh -cex "nginx"
|
|||
|
|
CMD nginx
|
|||
|
|
```
|