Store PostgreSQL and Redis data in Docker volumes.

This should solve permission issues that can occur in some cases (e.g.
on Windows PostgreSQL can complain about an ownership mismatch of the
/var/lib/postgresql/data directory).

README.md

@@ -15,8 +15,6 @@ but keep in mind that for production usage it might need modifications.
     * https://www.loraserver.io/lora-app-server/install/config/
     * https://www.loraserver.io/lora-geo-server/install/config/
 * `configuration/postgresql/initdb/`: directory containing PostgreSQL initialization scripts
-* `data/postgresql`: directory containing the PostgreSQL data (auto-created)
-* `data/redis`: directory containing the Redis data (auto-created)
 
 ## Configuration
 
@@ -25,6 +23,11 @@ The LoRa Server components are pre-configured to work with the provided
 to the `configuration/loraserver/loraserver.toml` configuration file to
 configure a different band.
 
+# Data persistence
+
+PostgreSQL and Redis data is persisted in Docker volumes, see the `docker-compose.yml`
+`volumes` definition.
+
 ## Requirements
 
 Before using this `docker-compose.yml` file, make sure you have [Docker](https://www.docker.com/community-edition)

docker-compose.yml

@@ -1,4 +1,4 @@
-version: "2"
+version: "3"
 
 services:
   loraserver:
@@ -29,14 +29,19 @@ services:
     image: postgres:9.6-alpine
     volumes:
       - ./configuration/postgresql/initdb:/docker-entrypoint-initdb.d
-      - ./data/postgresql:/var/lib/postgresql/data
+      - postgresqldata:/var/lib/postgresql/data
 
   redis:
     image: redis:4-alpine
     volumes:
-      - ./data/redis:/data
+      - redisdata:/data
 
   mosquitto:
     image: eclipse-mosquitto
     ports:
       - 1883:1883
+
+volumes:
+  postgresqldata:
+  redisdata:
+