{
    "postgres": {
        "host": "$PG_HOST",
        "port": "$PG_PORT"",
        "dbname": "$PG_DBNAME",
        "user": "$PG_USER",
        "password": "$PG_PASSWORD"
    }
}

{
    "postgres": {
        "host": "$PG_HOST",
        "port": "$PG_PORT",
        "dbname": "$PG_DBNAME",
        "user": "$PG_USER",
        "password": "$PG_PASSWORD"
    }
}

Fix double quotation mark in JSON
Fix double quotation mark in JSON
