Update Dockerfile

[VendorAttestation]

• Install libvips-dev from repo
• build ffmpeg 6 from source
• fix building issues
• fix Ffmpeg: Error muxing a packet
• fix malloc(): corrupted top size

Fixes https://github.com/HexCodeFFF/mediaforge/issues/178 https://github.com/HexCodeFFF/mediaforge/issues/189 https://github.com/HexCodeFFF/mediaforge/issues/158 (Tested with the user provided gif)

Proof:

https://github.com/HexCodeFFF/mediaforge/assets/132447890/8f0a0fe0-11cd-4326-9bb7-b5d81d42e67a

[VendorAttestation]

This took serveral hours of testing ill also note this may fix alot of ffmpeg related issues

I tried to build libvips from source to attempt to get the 8.14.3 but no success so we need to wait for debian to adopt the deb file

[reticivis-net]

Oh my god thank you so much When I get home in a little bit I'll verify this works then merge it

[reticivis-net]

So there's a couple issues here, I want the dockerfile to be able to get the latest ffmpeg automatically and also I need many of the optional flags enabled so I'm rewriting the dockerfile in my own git branch. so far I've got ffmpeg building from the latest snapshot and I'm gonna try to get libvips building.