Docker build fails on COPY or ADD statement for entrypoint, Windows only

Question

I'm creating an entrypoint for a Docker container, and then attempting to run it using a docker-compose.yml file. This works just fine in Ubuntu and OS X, but I get a permissions error (without much additional information) in Windows

Here is the Dockerfile:

FROM node:6.9

MAINTAINER Some Dude <[email protected]>

WORKDIR /opt

# Install Compass
RUN DEBIAN_FRONTEND=noninteractive apt-get -y dist-upgrade
RUN apt-get -y update
RUN apt-get -y install gcc rubygems ruby-dev
RUN gem update --system
RUN gem install compass

# Install Compass Extensions
RUN gem install compass-blend-modes compass-import-once

# Install glup globally
RUN npm install -g gulp

# Copy the setup file
COPY setup/gulp/docker-gulp-setup.sh /usr/local/bin/docker-gulp-setup.sh
RUN chmod +x /usr/local/bin/docker-gulp-setup.sh

CMD ['gulp']

Here is the docker-compose.yml entry:

version: '2'

services:

        mycontainer-for-gulp:
                build:
                        context: .
                        dockerfile: Dockerfile.gulp
                volumes:
                        - ./:/opt:Z
                command: /usr/local/bin/docker-gulp-setup.sh

Here is the output when the build command is run on Windows:

λ docker-compose build mycontainer-for-gulp
Building mycontainer-for-gulp
Traceback (most recent call last):
 File "<string>", line 3, in <module>
 File "compose\cli\main.py", line 65, in main
 File "compose\cli\main.py", line 117, in perform_command
 File "compose\cli\main.py", line 223, in build
 File "compose\project.py", line 300, in build
 File "compose\service.py", line 742, in build
 File "site-packages\docker\api\build.py", line 55, in build
 File "site-packages\docker\utils\utils.py", line 95, in tar
 File "tarfile.py", line 2023, in add
 File "tarfile.py", line 2052, in addfile
 File "tarfile.py", line 278, in copyfileobj
IOError: [Errno 13] Permission denied
docker-compose returned -1

Note that it IS the COPY command that's generating the error, because we tried commenting out both that and the RUN chmod statement individually.

When I run a raw docker build query:

docker build -f Dockerfile.gulp .

Then I get a bunch of error output as it tries to tar up the current directory. Basically every file add fails. Full output is here:

https://gist.github.com/danieltalsky/4cb6bddb6534c46b051230bc45578072

Answer 1

I was facing the same issue when I tried to build the Docker image while the application was still running in the IDE.

Make sure to shutdown your application before building your image