Support for MEGA with 2FA in Docker environment (stable, non-blocking performance)

[ford22]

What problem are you trying to solve?

I am using rclone with MEGA cloud storage in a Docker environment.
Currently, using MEGA with 2FA (two-factor authentication) is difficult or not well supported, especially in automated/containerized setups.

Additionally, under load (multiple transfers, background services like media servers), performance can become unstable or cause delays.

Proposed solution

• Add full support for MEGA accounts with 2FA in rclone (including non-interactive / headless login support).
• Provide a secure way to authenticate using tokens or session reuse that works well inside Docker containers.
• Improve stability and performance when running rclone in Docker (no blocking, no lag under load).
• Optional: environment variable support for authentication (for Docker usage).

Alternatives considered

• Using manual login or disabling 2FA (not secure, not acceptable).
• Using external scripts to refresh sessions (unstable and complex).

Additional context

Use case:

• Docker-based homelab (NAS, media stack, backups)
• Continuous sync with MEGA
• Need for stable, secure, and automated operation

It would be very helpful if rclone could better support modern security (2FA) while remaining efficient in containerized environments.

[ford22]

Ugreen pro dxp28000