如何在Docker容器内授予文件夹权限

Question

我正在Dockerfile中创建一个文件夹，我想给它一个写许可权。但是我尝试执行此操作时遇到权限拒绝错误

FROM python:2.7
RUN pip install Flask==0.11.1 
RUN useradd -ms /bin/bash admin
USER admin
COPY app /app
WORKDIR /app
RUN chmod 777 /app
CMD ["python", "app.py"]

我的错误是

PS C:\Users\Shivanand\Documents\Notes\Praneeth's work\Flask> docker build -t 
shivanand3939/test .
Sending build context to Docker daemon  209.9kB
Step 1/8 : FROM python:2.7
---> 8a90a66b719a
Step 2/8 : RUN pip install Flask==0.11.1
---> Using cache
---> 6dc114bd7cf1
Step 3/8 : RUN useradd -ms /bin/bash admin
---> Using cache
---> 1cfdb6eea7dc
Step 4/8 : USER admin
---> Using cache
---> 27c5e8b09f15
Step 5/8 : COPY app /app
---> Using cache
---> 5d628573b24f
Step 6/8 : WORKDIR /app
---> Using cache
---> 351e19a5a007
Step 7/8 : RUN chmod 777 /app
---> Running in aaad3c79e0f4
**chmod: changing permissions of ‘/app’: Operation not permitted
The command '/bin/sh -c chmod 777 /app' returned a non-zero code: 1**

如何授予对Docker容器内的app文件夹的写权限

Answer 1

我猜您正在切换到没有所有权来更改/ app目录权限的用户“ admin”。使用“ root”用户更改所有权。在Dockerfile下面为我工作-

FROM python:2.7
RUN pip install Flask==0.11.1 
RUN useradd -ms /bin/bash admin
COPY app /app
WORKDIR /app
RUN chown -R admin:admin /app
RUN chmod 755 /app
USER admin
CMD ["python", "app.py"]

PS-尝试摆脱“ 777”权限。我暂时尝试在Dockerfile上面做到这一点。