fix: Use newer syntax for ENV variables

[RulerOf]

Description

Current versions of Docker Desktop will output a LegacyKeyValueFormat warning when using 'ENV key value' syntax. We switch to the updated 'ENV key=value' syntax.

Type of Change

• _fix_

Check List

• [ ] New functionality includes tests
• [ ] All tests pass
• [x] Commit message includes a Conventional Commit Message

[damacus]

Blocked on #418