fix(build): honor RUST_TARGET variable when copying binaries
export GXI_PLUGIN_DIR=$5
-cargo build --manifest-path $1/Cargo.toml --release && cp $3/target/release/$4 $2
\ No newline at end of file
+cargo build --manifest-path $1/Cargo.toml --release && cp $3/target/${RUST_TARGET}/release/$4 $2
\ No newline at end of file
