Fix is required in the DockerFile to support WSS/SSL connections using cli_wallet

While verifying the steps in the document: https://peerplays.gitbook.io/peerplays-infrastructure-docs/witnesses/installation-guides/docker-install , for run.sh execution in Mainnet 1.6.0 release the following issues were observed:

1. The image was retrieved from another repository located at the Docker hub
2. The remote wallet command didn't work

The following work-item explains the issue in detail: #565

To solve the issue, the workaround mentioned below must be added into DockerFile located at:https://gitlab.com/PBSA/peerplays/-/blob/master/Dockerfile.

ENV PATH="${PATH}:/home/peerplays/peerplays-network" RUN sed -i '/^oid_section.*/a openssl_conf=default_conf' /etc/ssl/openssl.cnf RUN sed -i '/^ess_cert_id_alg.*/a\[default_conf]\nssl_conf=ssl_sect\n[ssl_sect]\nsystem_default=system_default_sect\n[system_default_sect]\nMinProtocol=TLSv1\nCipherString=DEFAULT@SECLEVEL=1' /etc/ssl/openssl.cnf

cc: @robert.hedler , Thanks for your verification and workaround to fix the issue.