docker: set health check and time zone

[pi-314]

• part of https://github.com/famedly/product-management/issues/1679

[github-actions]

Meow! Coverage

Total: 50.14%

Delta: -1.16%

🐈‍⬛ Untested Changes 🐈‍⬛

File Path	Lines
src/server.rs	17, 29-34, 36

[github-actions]

Meow! Coverage

Total: 50.14%

Delta: -1.16%

🐈‍⬛ Untested Changes 🐈‍⬛

File Path	Lines
src/server.rs	17, 29-34, 36

[github-actions]

Meow! Coverage

Total: 51.98%

Delta: 0.68%

🐈‍⬛ Untested Changes 🐈‍⬛

File Path	Lines
src/server.rs	17