diff --git a/app/Dockerfile b/app/Dockerfile
index bcdf181..e4dc1ab 100644
--- a/app/Dockerfile
+++ b/app/Dockerfile
@@ -14,12 +14,10 @@ exec bin/platform\n'\
 RUN wget https://github.com/mattermost/platform/releases/download/v1.2.1/mattermost.tar.gz \
 	&& tar -xvzf mattermost.tar.gz && rm mattermost.tar.gz
 
-ADD config/config.json /mattermost/config/
-ADD docker-entry.sh /
+COPY config.template.json /
+COPY docker-entry.sh /
 
 RUN chmod +x /docker-entry.sh
 ENTRYPOINT /docker-entry.sh
 
-VOLUME ["/mattermost/config"]
-
 EXPOSE 80
diff --git a/app/config/config.json b/app/config.template.json
similarity index 100%
rename from app/config/config.json
rename to app/config.template.json
diff --git a/app/docker-entry.sh b/app/docker-entry.sh
index 0fb3bd3..4904f16 100644
--- a/app/docker-entry.sh
+++ b/app/docker-entry.sh
@@ -1,6 +1,10 @@
 #!/bin/bash
 echo Starting Platform
-sed -Ei "s/PG_ADDR/$PG_PORT_5432_TCP_ADDR/" /mattermost/config/config.json
-sed -Ei "s/PG_PORT/$PG_PORT_5432_TCP_PORT/" /mattermost/config/config.json
+config=/mattermost/config/config.json
+if [ ! -f $config ]; then
+    cp /config.template.json $config
+    sed -Ei "s/PG_ADDR/$PG_PORT_5432_TCP_ADDR/" $config
+    sed -Ei "s/PG_PORT/$PG_PORT_5432_TCP_PORT/" $config
+fi
 cd /mattermost/bin
 ./platform
diff --git a/docker-compose.yml b/docker-compose.yml
index 3c1c8c6..c69839b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,6 +4,8 @@ app:
   build: app
   links:
     - db:pg
+  volumes:
+    - ./volumes/app/mattermost/config:/mattermost/config:rw
 web:
   build: web
   ports: