I'm running an odroid Arm 32 bit with a small sd card and OMV 4.
Previously I installed docker using this technodad video: Nextcloud, your personal cloud server, on Openmediavault because I want mariadb + nextcloud. This worked but I noticed that my odroid quickly ran out of internal space from docker being installed on its SD card. So I deleted all my containers and tried again:
I did the exact same thing again, with the only change being: in the Settings Tab of Docker in OMV, I chose a custom EXT share folder for the location of the Docker base path.
I downloaded linuxserver/nextcloud and linuxserver/maiadb (I even made sure I gave it the "arm32v7-latest" tag cause I got paranoid after the regular gave the same error and didn't understand the error) and set it up according to the video.
So when I try to run it from bash, particularly at this second in the technodad video, `mysql -uroot -p` keeps failing, with the error:
`Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory")`
Indeed navigating to /var/run/, there is no mysqld folder at all and I couldn't find it anywhere in /var/. I did a `find . -name mysqld\*` in `/sharedfolders/MY_DOCKER_FOLDER/` and I found a bunch of entries (but not mysqld.sock) in `./overlay2/3hn5b6c23bh6nb7c34h45hj6g4f/diff/.....` and `./overlay2/k7bg6734kjhj56gh67h34gh34lj678/merged/.....` folders.
Why is everything always so difficult in linux? Can't something for once give an error message that says exactly what is wrong and why? 
Why would mysql.sock be expected to be there and why isn't it there? Who creates it when? How am I supposed to know that? I'm not going to read a whole couple of manuals to find out that I still don't know why.
I just want Nextcloud......
Why can't just has nextcloud?...
