Made docker utilizes cache mechanism. also change entrypoint

[vxcall]

Hi, I found that docker build takes really long with current Dockerfile and I thought I can help u with it.

This PR significantly decreases build time. More specifically, when u change source files, because it's nothing to do with dependency list, u can completely skip dependency install step which is huge.

so I made following changes:

• execute all dependency install first. because COPY all the source code before dependency install typically makes docker confuse and end up not caching.
• added --mount=type=cache to utilize cache type mount which persists between build layers.
• changed ENTRYPOINT from /bin/bash to /root/Mergen/build/lifter so that u can directly do docker run -it --rm mergen FILEPATH ADDRESS. Cuz I didnt see the benefit of going into bash. If there's any benefit of run bash than directly lifter bin, tell me

speed in action in my env

These are the build logs for

• subtle .cpp file change
• dependency change

When I make small change to cpp files it took 2.6 seconds to build. became way faster

When I add curl to dependency list, it takes 366 seconds to build which is ok cuz it's dependency build. maybe i can make it faster tho but it's out of scope for now.

Also since i changed the entrypoint, u have to mount the directory into container like this docker run --rm -v /Users/vxcall/Downloads:/root/Mergen/data mergen /root/Mergen/data/devirtualizeme.exe 0xADDRESS

[vxcall]

Also I'm passionate about learning vmp lifting by messing around this repo, so could you put good first issue tag on easy one so that I can work on it from there?

[NaC-L]

LGTM! Thank you for your contribution.

[NaC-L]

I will try to organize issues o7