Move cert import since volumes are not mounted during build.

Config/Prosody/Dockerfile

@@ -20,12 +20,10 @@ COPY ./etc/*.lua /etc/prosody/
 COPY ./etc/conf.avail/* /etc/prosody/conf.d/
 RUN rm -rfv /etc/prosody/README*
 
-## Certs ##
-RUN prosodyctl cert import /etc/letsencrypt/live
-
 ## Main ##
 # Install + Run Website
 WORKDIR /root
 USER root
-CMD prosodyctl reload & \
+CMD prosodyctl cert import /etc/letsencrypt/live & \
+		prosodyctl reload & \
 		tail -F /var/log/prosody/*