Fix SSH key and config persistence

Signed-off-by: Billy Brawner <billy@wbrawner.com>

Dockerfile

@@ -2,15 +2,12 @@ FROM alpine:latest
 
 RUN apk add git apache2 openssh cgit py3-markdown py3-pygments
 
-COPY sshd_config /etc/ssh/sshd_config
+COPY sshd_config /sshd_config
 COPY httpd.conf /etc/apache2/httpd.conf
 COPY cgitrc /etc/cgitrc
 COPY entrypoint.sh /entrypoint.sh
 COPY update-mirrors.sh /update-mirrors.sh
 
-# Generate host keys for the server
-RUN ssh-keygen -A
-
 # Create directory for cgit config
 RUN mkdir -p /etc/cgit.d
 

entrypoint.sh

@@ -2,6 +2,16 @@
 
 set -m
 
+# Create host keys if they haven't been created already
+if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
+    ssh-keygen -A
+fi
+
+# Copy the SSH config if it hasn't already been setup
+if [ ! -f /etc/ssh/sshd_config ]; then
+    cp /sshd_config /etc/ssh/sshd_config
+fi
+
 /usr/sbin/sshd -De &
 
 /usr/sbin/crond -fd8 &