Home Assistant - Enable SSH Access

HOWTO: Access the HA OS host itself over ssh:

• Install Terminal & SSH add-on - use community edition
• specify port 22
• edit config YAML and add your public key
• leave password empty
• restart add-on

After that:

alex@latitude7490:~/ > ssh root@homeassistant 'ps ax'
PID   USER     TIME  COMMAND
    1 root      0:00 /package/admin/s6/command/s6-svscan -d4 -- /run/service
   15 root      0:00 s6-supervise s6-linux-init-shutdownd
   17 root      0:00 /package/admin/s6-linux-init/command/s6-linux-init-shutdownd -c /run/s6/basedir -g 3000 -C -B
   22 root      0:00 s6-supervise s6rc-fdholder
   23 root      0:00 s6-supervise s6rc-oneshot-runner
   30 root      0:00 /package/admin/s6/command/s6-ipcserverd -1 -- /package/admin/s6/command/s6-ipcserver-access -v0 -E -l0 -i data/rules -- /package/admin/s6/command/s6-sudod -t 30000 -- /package/admin/s6-rc/command/s6-rc-oneshot-run -l ../.. --
  131 root      0:00 s6-supervise ttyd
  132 root      0:00 s6-supervise sshd
  134 root      0:00 ttyd -p 8099 tmux -u new -A -s homeassistant bash -l
  135 root      0:00 sshd: /usr/sbin/sshd -D -e [listener] 0 of 10-100 startups
  192 root      0:00 sshd: root@notty
  194 root      0:00 ps ax

• in Proxmox web GUI drop into VM shell using login and then:

docker cp addon_core_ssh:/root/.ssh/authorized_keys .

• then

systemctl start dropbear

• finally:

alex@latitude7490:~/ > ssh ssh://root@homeassistant:22222 'ps'
    PID TTY          TIME CMD
      1 ?        00:00:02 systemd
      2 ?        00:00:00 kthreadd
      3 ?        00:00:00 rcu_gp
      4 ?        00:00:00 rcu_par_gp
      5 ?        00:00:00 slub_flushwq
      6 ?        00:00:00 netns