Add SELinux Z flag to docker bind

The 'Z' option tells Docker to label the content with a private unshared
label. This fixes running healtcheck-and-setup on SELinux distros
(RedHat, Fedora, CentOS). Without the flag, SELinux prevents any access
to the file.

Author: borancar

docker-compose.yml

@@ -16,7 +16,7 @@ services:
       - config-ce:/etc/gitlab
       - logs-ce:/var/log/gitlab
       - data-ce:/var/opt/gitlab
-      - ${PWD}/scripts/healthcheck-and-setup.sh:/healthcheck-and-setup.sh
+      - ${PWD}/scripts/healthcheck-and-setup.sh:/healthcheck-and-setup.sh:Z
     healthcheck:
       test: /healthcheck-and-setup.sh
       interval: 10s