FIX: no mail is being sent to user

[urmi1510799]

As tsx is used for backend __dirname is failed to solve at mail.ts showing error: __dirname is not defined. As a result signup and reset password isn't possible and mail is failed to send to user. This can be fixed by this following code. I highly encourage to implement this fix as soon as possible.

mail.ts:

import { fileURLToPath } from 'node:url'
import { dirname } from 'node:path'

const __dirname = dirname(fileURLToPath(import.meta.url))

Dockerfile:

COPY --from=backend /app/src/utils/templates /app/build/utils/templates