我无法通过网络搜索 site:stackoverflow.com dockerfile RUN fs changes not persisted 找到该具体信息.
我做了Dockerfile并想通过RUN对图像进行一些更改。首先，我想更改文件属性，但启动的容器中没有更改。我发现这篇文章大约需要 docker chmod 的错误和解决方法:https://serverfault.com/questions/772227/chmod-not-working-correctly-in-docker 。但是，现在我只是尝试通过 RUN touch /path/file 创建一个文件在Dockerfile并且已经在下一个命令(据我了解文档的 docker 的下一层)中，更改(该文件)消失了。据我看来很奇怪，不然怎么apt install然后就可以工作了，因为它会对图像中的文件系统进行更改...为什么会出现该特定的结果 RUN不坚持？下面的文档告诉相反(或者我误解了 commit 的含义):
https://docs.docker.com/engine/reference/builder/ :
The RUN instruction will execute any commands in a new layer on top of the current image and commit the results. The resulting committed image will be used for the next step in the Dockerfile.
这是 docker build --no-cache -t yandex:user5 yandex2/ 的输出(参见步骤 6 和 7；dockeruser 已创建，顺便说一句):
Step 1/8 : FROM artifactory.dev.foo.org:5000/yandex-tank:jmeter
---> b8286a9220ca
Step 2/8 : LABEL maintainer="<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="44222b2b04222b2b6a2b3623" rel="noreferrer noopener nofollow">[email protected]</a>"
---> Running in 7cfde9a90bf2
Removing intermediate container 7cfde9a90bf2
---> b5acd9d55f9c
Step 3/8 : WORKDIR /var/loadteest
---> Running in 47e9adc401bb
Removing intermediate container 47e9adc401bb
---> 103f158e0be3
Step 4/8 : USER root
---> Running in 9923d71f7b08
Removing intermediate container 9923d71f7b08
---> bb3aa8672bc6
Step 5/8 : RUN groupadd -r dockeruser && useradd -r -g dockeruser -d /var/loadtest -s /sbin/nologin -c "Docker image user" dockeruser
---> Running in 48c89f33d750
Removing intermediate container 48c89f33d750
---> 5000afa7698d
Step 6/8 : RUN touch /var/loadtest/chmodtest.txt
---> Running in 00b2d1ccad75
Removing intermediate container 00b2d1ccad75
---> c35808f13344
Step 7/8 : RUN ls -al /var/loadtest
---> Running in cc08d129eeb3
total 8
drwxr-xr-x 2 root root 4096 Nov 20 12:19 .
drwxr-xr-x 1 root root 4096 Nov 29 06:15 ..
Removing intermediate container cc08d129eeb3
---> 842678ca5d49
Step 8/8 : ENTRYPOINT /bin/bash
---> Running in 20b92a97c8a8
Removing intermediate container 20b92a97c8a8
---> fefd0d665677
Successfully built fefd0d665677
Successfully tagged yandex:user5
最佳答案
问题在于使用基础镜像中的卷:
Changing the volume from within the Dockerfile: If any build steps change the data within the volume after it has been declared, those changes will be discarded.
参见This
关于Dockerfile : changes made to filesystem via RUN do not persist，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59099955/