Potential improvement to compilation size on rust spin image

[AtlasHands]

If the rust spin image is compiled with symbol stripping the size can be decreased from 1.9MB to 132KB, using the command:

RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-wasi --release

this can also be done in the Cargo.toml file so that compiling in release mode strips symbols by default:

[profile.release]
strip = true

I tested to make sure it would work with the spin framework using spin up and it was functional.

[Mossaka]

Thanks! I like it a lot. That's an interesting idea.

[Mossaka]

It seems that using cargo wasi build --release together with strip=true further reduces the size of the wasm binary. This is probably due to the fact that cargo wasi uses wasm-opt by default.

[Mossaka]

Closed by #59