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.
edc-connector/connector/Dockerfile|5 col 1| Do not use apt as it is meant to be a end-user tool, use apt-get or apt-cache instead
edc-connector/connector/Dockerfile|17 col 1| Use arguments JSON notation for CMD and ENTRYPOINT arguments