chore: upgrades to start-database.sh

[acharlop]

✅ Checklist

• I have followed every step in the contributing guide (updated 2022-10-06).
• The PR title follows the convention we established conventional-commit
• I performed a functional test on my final commit

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Changelog

In start-database.sh some variables are built from DATABASE_URL and some aren't. This PR changes that so all variables are built from it.

• DB_NAME added
• DB_CONTAINER_NAME uses "$DB_NAME-postgres"

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Screenshots

[Screenshots]

💯

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🦋 Changeset detected

Latest commit: 10d605e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
create-t3-app	Patch

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[acharlop]

Might have broken your CI pipeline with this 🤦‍♂️