Update entrypoint script in Dockerfile and remove DATABASE_URL reference from schema.prisma: Modify entrypoint to check for prisma.config.ts instead of schema.prisma, and streamline migration command. Remove DATABASE_URL environment variable usage from schema.prisma for improved clarity.

prisma/schema.prisma

@@ -5,7 +5,6 @@ generator client {
 
 datasource db {
   provider = "postgresql"
-  url      = env("DATABASE_URL")
 }
 
 model User {