Allow for Users to Set Passwords

[johnson2500]

Issue

While running this skill, the a yml file was generated with the following lines:

pgvector:
    image: pgvector/pgvector:pg16
    ports:
      - "5432:5432"
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      POSTGRES_DB: semantic_router
    volumes:
      - pgvector-data:/var/lib/postgresql/data

For POSTGRES_PASSWORD:

1. The user should be able to set the value or be aware that we are using generic passwords.
2. Either way, it's better if we include the passwords under the .env file and create secrets later when deploying

Originally posted by @Hadar301 in #1

Possible Solution

Make sure that in the right stage we reference the usage of UV if not present.