allow change of the databe name via. Docker env var

[zer0divisi0n]

docker/14.0/wait-for-psql.py

Line 21 in f821260

conn = psycopg2.connect(user=args.db_user, host=args.db_host, port=args.db_port, password=args.db_password, dbname='postgres')

would it be possible to change the last connection parameter dbname='postgres' to dbname=args.db_name to allow changing the postgres database name

[alexsegura]

Yeah, this hardcoded database name makes me crazy.

[amh-mw]

14.0 is EOL, so you're out of luck for that version, but I put up a patch for 15.0-17.0
PR DOA

[amh-mw]

would it be possible to change the last connection parameter dbname='postgres' to dbname=args.db_name to allow changing the postgres database name

It's fine that it is hardcoded to postgres here. It's just checking to make sure that the postgres service is available.