For development purpose, I need to setup an installation of WP in a docker.
I found and follow this tutorial
Everything is working well, with all the security and optimisation. But the tutorial is based on WP 4.5.2. And when everything is setup I cannot upgrade WP because of some permission denied. Of course I modified by myself the Dockerfile to get WP4.7 but I will not be able to do the futur upgrade.
Also if I need to install a plugin, it fail because it cannot create the folder in my volume. If I mkdir -p the folders I everything is working fine.
Here the GitHub with all the files.
So I think everything is linked but I cannot fix it. Any idea ?
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Have you set up a volume in your WordPress deployment so that the process can write files? A docker container itself is read-only so provisions must be made for files that need to be updated/replaced. This guide covers setting up WP with a volume.