use :Z (selinux) for volume mounts (re. #201)

[vorburger]

This helps with, but doesn't entirely fix just yet,
running this project on Fedora using podman up -d instead of Docker.

This should not break regular docker-compose on systems without SELinux.

[vorburger]

@saghul this partially helps with #201, but doesn't entirely fix it yet.

You'll probably want to double check that it does not break your regular Docker (it should not).

[jmhunter]

FWIW - I just tried using docker-compose to install jitsi (CentOS 7, selinux enabled) and it was not successful until I applied this patch.

Before the patch it was unable to create directories as below. After the patch, all works great!

[cont-init.d] 10-config: executing...
mkdir: cannot create directory '/config/nginx': Permission denied
mkdir: cannot create directory '/config/keys': Permission denied

If it helps:
CentOS Linux release 7.7.1908 (Core)
Docker version 1.13.1, build cccb291/1.13.1
docker-compose version 1.23.2, build 1110ad01

[vorburger]

@saghul given the independent verification" (above) of this one, do you want to merge it?

[digital-codes]

I have the same setup (centos 7.7. with selinux). The :Z is required to make it work.

[sapkra]

Closing because already applied in master.