Fix ability to change database credentials

[diego-G]

Expected behavior

A delegate is able to change database credentials from default.

Actual behavior

The Lisk Docker image overwrites the work done by the entrypoint. Even if changing by hand config.json, db.env and docker-compose.yml, db password gets overwritten when we restart the container.

Which version(s) does this affect? (Environment, OS, etc...)

0.9.11+

[fchavant]

@diego-G this problem will disappear after #75 is merged and you will be able to set any password in docker-compose.yml like so:

git diff docker-compose.yml
diff --git a/examples/testnet/docker-compose.yml b/examples/testnet/docker-compose.yml
index dddd85c..d2cc8c8 100644
--- a/examples/testnet/docker-compose.yml
+++ b/examples/testnet/docker-compose.yml
@@ -13,6 +13,8 @@ services:
       - db
     command: ["/home/lisk/wait-for-it.sh", "db:5432", "--", "/home/lisk/run.sh"]
     restart: on-failure
+    environment:
+      - LISK_CONFIG_DATABASE_PASSWORD=foobar

   db:
     image: postgres:9.6-alpine
@@ -23,7 +25,7 @@ services:
     restart: on-failure
     environment:
       - POSTGRES_DB=lisk_test
-      - POSTGRES_PASSWORD=password
+      - POSTGRES_PASSWORD=foobar
       - POSTGRES_USER=lisk

   task:
@@ -32,7 +34,7 @@ services:
       - lisk-test
     environment:
       - PGUSER=lisk
-      - PGPASSWORD=password
+      - PGPASSWORD=foobar
       - PGDATABASE=lisk_test
       - PGHOST=db
     command: /bin/true
make
docker-compose logs

[fchavant]

Fixed by #75