如何在Alpine Docker容器中运行Bash脚本?

我的目录仅包含两个文件,Dockerfile并且sayhello.sh

.

├── Dockerfile

└── sayhello.sh

Dockerfile

FROM alpine

COPY sayhello.sh sayhello.sh

CMD ["sayhello.sh"]

并且sayhello.sh仅包含

echo hello

Dockerfile成功生成:

kurtpeek@Sophiemaries-MacBook-Pro ~/d/s/trybash> docker build --tag trybash .

Sending build context to Docker daemon 3.072 kB

Step 1/3 : FROM alpine

---> 665ffb03bfae

Step 2/3 : COPY sayhello.sh sayhello.sh

---> Using cache

---> fe41f2497715

Step 3/3 : CMD sayhello.sh

---> Using cache

---> dfcc26c78541

Successfully built dfcc26c78541

但是,如果尝试run这样做,则会executable file not found in $PATH出现错误:

kurtpeek@Sophiemaries-MacBook-Pro ~/d/s/trybash> docker run trybash

container_linux.go:247: starting container process caused "exec: \"sayhello.sh\": executable file not found in $PATH"

docker: Error response from daemon: oci runtime error: container_linux.go:247: starting container process caused "exec: \"sayhello.sh\": executable file not found in $PATH".

ERRO[0001] error getting events from daemon: net/http: request canceled

是什么原因造成的?(我记得debian:jessie以类似的方式在基于图像的脚本中运行脚本,所以也许它是Alpine特有的)?

回答:

Alpine附带ash作为默认外壳,而不是bash

所以你可以

  1. 有一个shebang将/ bin / bash定义为sayhello.sh的第一行,因此您的文件sayhello.sh将以bin / sh开头

    #!/bin/sh

  2. 就像您期望的那样,在您的Alpine映像中安装Bash,就像在Dockerfile中这样一行:

    RUN apk add --no-cache --upgrade bash

以上是 如何在Alpine Docker容器中运行Bash脚本? 的全部内容, 来源链接: utcz.com/qa/435064.html

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