ssh-behind-bastion-playback

docker-compose.yml contains two services based on danielguerra/alpine-sshd Docker image with sshd on board:

• bastion service is seen outside of the docker-compose project network, sshd could be reached outside by the value of BASTION_SSH_PORT environment variable (equal to 4848) contained in .env file;
• internal service could be reached by internal hostname inside the docker-compose project network, 22 port is exposed for sshd.

start.sh starts Docker Compose services and prepares ssh-keys volume by copying ~/.ssh/id_rsa.pub (which correspond to ~/.ssh/id_rsa) to the /root/.ssh/authorized_keys, which becomes available for both services.

.ssh/config could be append to ~/.ssh/config configuration to a local machine. ssh internal.service should work outright after that.