Implement the ability to change the ssh port to match what is in the gitea config (#7286)

* - rearrange the templates to make it more logical because now ssh_config is a template
- implemented the updating of the port to the same as the port sent to the gitea config

* change the filename back

docker/root/etc/templates/sshd_config

@@ -0,0 +1,33 @@
+Port ${SSH_PORT}
+Protocol 2
+
+AddressFamily any
+ListenAddress 0.0.0.0
+ListenAddress ::
+
+LogLevel INFO
+
+HostKey /data/ssh/ssh_host_ed25519_key
+HostKey /data/ssh/ssh_host_rsa_key
+HostKey /data/ssh/ssh_host_dsa_key
+HostKey /data/ssh/ssh_host_ecdsa_key
+
+AuthorizedKeysFile .ssh/authorized_keys
+
+UseDNS no
+AllowAgentForwarding no
+AllowTcpForwarding no
+PrintMotd no
+
+PermitUserEnvironment yes
+PermitRootLogin no
+ChallengeResponseAuthentication no
+PasswordAuthentication no
+PermitEmptyPasswords no
+
+AllowUsers git
+
+Banner none
+Subsystem sftp /usr/lib/ssh/sftp-server
+
+AcceptEnv GIT_PROTOCOL