Merge pull request #898 from polywrap/wasm-snip-reduce-size-rust

Reduce Rust Wasm Module Size By 85% (wasm-snip)

packages/cli/src/lib/build-envs/wasm/rust/Dockerfile.mustache

@@ -18,6 +18,9 @@ RUN curl -L https://github.com/WebAssembly/binaryen/releases/download/version_10
 # Install the toml-cli
 RUN cargo install toml-cli
 
+# Install wasm-snip
+RUN cargo install wasm-snip
+
 {{#web3api_linked_packages.length}}
 WORKDIR /linked-packages
 {{/web3api_linked_packages.length}}
@@ -105,5 +108,7 @@ RUN mkdir ./build
 # Use wasm-opt to perform the "asyncify" post-processing step over all modules
 {{#web3api_modules}}
 RUN WASM_MODULE=$(ls ./{{dir}}/target/wasm32-unknown-unknown/release/*.wasm); \
-    wasm-opt --asyncify -O2 $WASM_MODULE -o ./build/{{name}}.wasm
+    wasm-snip $WASM_MODULE -o ./build/snipped_{{name}}.wasm && \
+    wasm-opt --asyncify -Os ./build/snipped_{{name}}.wasm -o ./build/{{name}}.wasm && \
+    rm -rf ./build/snipped_{{name}}.wasm
 {{/web3api_modules}}