make sure ssh-host-keys get created during container start and are not

part of the image

Dockerfile

@@ -3,7 +3,6 @@ MAINTAINER b3vis
 #Install Borg & SSH
 RUN apk add openssh sshfs borgbackup supervisor --no-cache
 RUN adduser -D -u 1000 borg && \
-    ssh-keygen -A && \
     mkdir /backups && \
     chown borg.borg /backups && \
     sed -i \
@@ -11,6 +10,7 @@ RUN adduser -D -u 1000 borg && \
         -e 's/^PermitRootLogin without-password$/PermitRootLogin no/g' \
         /etc/ssh/sshd_config
 COPY supervisord.conf /etc/supervisord.conf
+COPY service.sh /usr/local/bin/service.sh
 RUN passwd -u borg
 EXPOSE 22
 CMD ["/usr/bin/supervisord"]

service.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+ssh-keygen -A
+/usr/sbin/sshd -D

supervisord.conf

@@ -2,4 +2,4 @@
 nodaemon=true
 
 [program:sshd]
-command=/usr/sbin/sshd -D
+command=/usr/local/bin/service.sh