Move pocket Id data dir

pocketid/.env.example

@@ -3,3 +3,5 @@ TRUST_PROXY=
 MAXMIND_LICENSE_KEY=
 PUID=
 PGID=
+
+POCKETID_DATA_DIR=

pocketid/docker-compose.yml

@@ -6,8 +6,7 @@ services:
     ports:
       - "3043:1411"
     volumes:
-      #TODO change this to a more appropriate location
+      - ${POCKETID_DATA_DIR}:/app/data
-      - ./data:/app/data
     # Optional healthcheck
     healthcheck:
       test: "curl -f http://localhost:1411/healthz"