Update Dockerfile to change deprecated links

[josh-nook]

Old dockerfile didn't compose due to deprecated packages and broken links.

[IgWod]

Hey @josh-nook,

Thank you for your contribution. Looks good to me. Just to double check, did you try to run a simple program with MAMBO inside the container just to confirm there aren't any issues because of the newer software?

[josh-nook]

It worked in the aarch64 VM, reminds me that I didn't try the riscv. I'll do that now and get back to you

[josh-nook]

Unfortunately,

MAMBO: detected architecture "riscv64"
make[2]: *** No rule to make target 'native'.  Stop.
make[1]: *** [makefile:79: pie] Error 2
make: *** [makefile:76: all] Error 2

When following the /docker/readme instructions for riscv

[IgWod]

I can't currently run the image, but I had a brief look at the build instructions and they aren't correct anymore:

This:

Clone MAMBO using the following command: git clone --recurse-submodules https://github.com/beehive-lab/mambo.git

Should change to:

Clone MAMBO using the following command: git clone https://github.com/beehive-lab/mambo.git

And this can be completely removed as now it is all in one repo on master:

Run the following commands: cd pie && git checkout master && cd .. && git checkout riscv

Could try it and if it works update the instruction?