I'm trying to deploy a Nextcloud container, where the config is copied from the local directory to the container. I'm not getting any error when building or running the container, and I can see the steps are successfully executed per the terminal. Regardless, the copied file simply is not in the container. What's going on here?
Dockerfile:
FROM nextcloud:latest
# Copy local config
COPY ./config.php /var/www/html/config
All the evidence:
Thanks!
The file is copied but is being deleted later.
This is a very typical scenario, and in this cases, the best you can do is to see what happens in the parent image nextcloud:latest once the container starts.
In nextcloud's Dockerfile you can see
ENTRYPOINT ["/entrypoint.sh"]
if we open entrypoint.sh in the line 100 you can see clearly that the content of /var/www/html/config is modified
You can maybe do any of these options
Copy the file to a different temporary location, and create your own entrypoint (you can copy-paste from the original one to hit the ground running, or you can try to figure out a fancier solution)
Or also you can copy the file after creating and running the container
docker cp config.php copytest:/var/www/html/config