failed to open stream: Permission denied

[rvernica]

I got the latest Docker image from Docker Hub:

> docker run --rm -it --name dcv -v $(pwd):/input:rw pmsipilot/docker-compose-viz
Warning: file_put_contents(/input/docker-compose.png): failed to open stream: Permission denied in /dcv/src/application.php on line 137

I copied the docker-compose.yml to /tmp did chmod a+r on it, and ran the docker run command there. It worked fine.

This is due to specifying the dcv username in Dockerfile. It is easy to fix by not imposing a username and having the root user being used.

This issue was mentioned before in #21, but as part of a separate thread.

[markiewb]

I also had to create a subfolder to get it working

mkdir output && chmod 777 output
docker run --rm -it --network none -v $(pwd):/input:rw pmsipilot/docker-compose-viz render -m image --output-file output/docker-compose.yml.png docker-compose.yml 

[thamerbelfkihthamer]

there is no one able to resolve this issue?

[markiewb]

@thamerbelfkihthamer Have you tried my approach above? It had worked for me this way...

[pengyuan-zhou]

docker run --rm -it --network none -v $(pwd):/input:rw pmsipilot/docker-compose-viz render -m image --output-file output/docker-compose.yml.png docker-compose.yml

works like a charm

[jubianchi]

Hi everyone here! 👋🏻

I just added the "help wanted" label: if anyone wants to contribute something in the README, like a "Caveats" paragraph explaining this kind of problems and how to solve them it would be really apreciated.

I can't actually reproduce the problem (I'm working on MacOS with Docker For Mac) and never had any problem so I don't think I will be able to provide the best solution here.

Thank you all 🙏

[pengyuan-zhou]

Hi everyone here! 👋🏻

I just added the "help wanted" label: if anyone wants to contribute something in the README, like a "Caveats" paragraph explaining this kind of problems and how to solve them it would be really apreciated.

I can't actually reproduce the problem (I'm working on MacOS with Docker For Mac) and never had any problem so I don't think I will be able to provide the best solution here.

Thank you all 🙏

Hi, I met this today on ubuntu 16.04, no specific reason noticed, and I just used the command suggested by @markiewb then solved. If helpful, I can add this into README, or better, if @markiewb would.

[markiewb]

Proposed as MR #51

[jubianchi]

Thanks @pengyuan-zhou for confirming @markiewb solution.

The MPR has been merged.