update README and docker-compose file

README.md

@@ -0,0 +1,14 @@
+# keepass2 in Docker
+
+Running keepass2 in Docker
+
+## Launching keepass2
+
+### with Docker Compose
+
+You can use the following shortcut function and place it to your `~/.bash_aliases` file
+
+```
+function docker_helper() { (cd ~/docker/$1; docker-compose run --rm "$@" & disown) }
+function keepass2() { (docker_helper $FUNCNAME $@) }
+```

docker-compose.yml

@@ -2,7 +2,7 @@ version: '2'
 
 services:
   keepass2:
-    build: ./
+    image: andrey01/keepass2
     network_mode: bridge
     volumes:
       - /tmp/.X11-unix:/tmp/.X11-unix