Volumed data setup changed to allow #1759

- Volumed subfolder now created up in the ENTRYPOINT script, this way
  they are created before S6 even starts making VOLUME.
- The subfolder will be created during VOLUME creation too as ENTRYPOINT
  script will be run before /bin/true
- SSH Keys will now be created on a single key basis not replying on the
  existence of /data/ssh folder

docker/start.sh

@@ -5,6 +5,13 @@
 rm -rf $(find /app/gogs/docker/s6/ -name 'event')
 rm -rf /app/gogs/docker/s6/SOCAT_*
 
+# Create VOLUME subfolder
+for f in /data/gogs/data /data/gogs/conf /data/gogs/log /data/git /data/ssh; do
+    if ! test -d $f; then
+        mkdir -p $f
+    fi
+done
+
 # Bind linked docker container to localhost socket using socat
 env | sed -En 's|(.*)_PORT_([0-9]*)_TCP=tcp://(.*):(.*)|\1_\2 socat -ls TCP4-LISTEN:\2,fork,reuseaddr TCP4:\3:\4|p' | \
 while read NAME CMD; do