Cannot open file `/app/dub.selections.json' in mode `wb' (Permission denied) about docker-vibed-demo

[aberba]

Looks like it has to do with file access permissions. wb mode is for opening a binary file for writing[1]. I'm not sure what its trying to do in your case. Try building the docker image with something like sudo to see if it will work cus I see (Permission denied) in the error message. I've never used Linux mint for docker though.

[1] https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.3.0/com.ibm.zos.v2r3.bpxbd00/fopen.htm

[zafer06]

OK. I finally solved it. I added new RUN command to Docker file. Thank you for your help.

# Change permission /app folder
RUN chown -R app:app /app && chmod -R 755 /app

[aberba]

Should I add that to the commands? probably doing that will be best for all?

[zafer06]

I think it would be good.