apps/docker/Dockerfile|1 col 1| Always tag the version of an image explicitly
docker/Dockerfile|76 col 1| Use the -y switch to avoid manual input dnf install -y <package
docker/Dockerfile|76 col 1| Specify version with dnf install -y <package>-<version>.
docker/Dockerfile|76 col 1| In POSIX sh, echo flags are undefined.