Dockerfile: Harden permissions
For example as it's an OTP build, Pleroma shouldn't have write permissions on it's own code.
Compare with https://gitweb.gentoo.org/repo/proj/guru.git/tree/www-apps/pleroma/pleroma-9999.ebuild.
For example as it's an OTP build, Pleroma shouldn't have write permissions on it's own code.
Compare with https://gitweb.gentoo.org/repo/proj/guru.git/tree/www-apps/pleroma/pleroma-9999.ebuild.