[BUG-FIX] Removes duplicate Environment tag from docker-compose

[Lissy93]

Please check the type of change your PR introduces:

• Bugfix

Issue Number (if applicable): #48

Briefly outline your changes: There was a duplicate identifier, environment in the docker-compose.yml file, as pointed out by @EVOTk in #48. This PR applies his suggestions, removing the duplicate key.

Before submitting, please ensure that:

• Must be backwards compatible
• All lint checks and tests must pass
• If a new option in the the config file is added, it needs to be added into the schema, and documented in the configuring guide
• If a new dependency is required, it must be essential, and it must be thoroughly checked out for security or efficiency issues

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/alicia/dashy/Cd4GyMunyzZTstRoooso7KSycDph
✅ Preview: https://dashy-git-bug-fixremove-dupplicate-from-compose-alicia.vercel.app

[netlify]

✔️ Deploy Preview for dashy-dev ready!

🔨 Explore the source changes: 63b2e65

🔍 Inspect the deploy log: https://app.netlify.com/sites/dashy-dev/deploys/60d0f1f2213eff000770cb91

😎 Browse the preview: https://deploy-preview-49--dashy-dev.netlify.app