Move Database Connection Credentials to Environment Variables

.env.example

@@ -3,3 +3,8 @@ export DISABLE_MAINNET_SYNC=true # Set to true if you want to disable mainnet sy
 export DISABLE_TESTNET_SYNC=true # Set to true if you want to disable testnet sync
 export RPC_API_HOST=<YOUR_RPC_API_HOST> # Set to your mainnet rpc api host, is will be used in the explorer as "Mainnet"
 export TESTNET_RPC_API_HOST=<YOUR_TESTNET_RPC_API_HOST> # Set to your testnet rpc api host, is will be used in the explorer as "Testnet"
+export DB_NAME=<DB_NAME> # set DB creds
+export DB_USER=<DB_USER>
+export DB_PASS=<DB_PASS>
+export DB_HOST=<DB_HOST>
+

config/dev.exs

@@ -3,10 +3,10 @@ import Config
 # Configure your database
 if System.get_env("DB_TYPE") == "postgresql" do
   config :starknet_explorer, StarknetExplorer.Repo,
-    database: "madaraexplorer_dev",
-    username: "madaraexplorer_user",
-    password: "madaraexplorerlambda",
-    hostname: "localhost",
+    database: System.get_env("DB_NAME", "madaraexplorer_dev"),
+    username: System.get_env("DB_USER", "madaraexplorer_user"),
+    password: System.get_env("DB_PASS", "madaraexplorerlambda"),
+    hostname: System.get_env("DB_HOST", "localhost"),
     port: 5432
 else
   config :starknet_explorer, StarknetExplorer.Repo,