migrate db parameters to aws rds

[sjuuun]

Descriptions

• Migrate from containerized PostgreSQL to AWS RDS which is managed DB.
• Use SSL for DB connection
  • From PostgreSQL version 15, PostgreSQL requires SSL connection.
  • FYI. https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/PostgreSQL.Concepts.General.SSL.html
• SSL certificate from https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.SSL.html#UsingWithRDS.SSL.RegionCertificates
• Handle environment variables with .env file in compose.yml

In progress

• How to manage environment variables such as DB_HOST or DB_PASSWORD
• Migrate existing data to AWS RDS