Simplify docker file

Author: hhugo

bench.Dockerfile

@@ -7,13 +7,14 @@ RUN sudo ln -sf /usr/bin/opam-2.3 /usr/bin/opam
 RUN opam remote add origin https://github.com/ocaml/opam-repository.git && \
     opam update
 RUN wget https://nodejs.org/dist/v22.14.0/node-v22.14.0-linux-x64.tar.xz && \
-    tar xJvf node-v22.14.0-linux-x64.tar.xz && \
-    sudo cp node-v22.14.0-linux-x64/bin/node /usr/bin/node && \
-    wget https://github.com/WebAssembly/binaryen/releases/download/version_122/binaryen-version_122-x86_64-linux.tar.gz && \
-    tar xzvf binaryen-version_122-x86_64-linux.tar.gz && \
-    sudo cp binaryen-version_122/bin/wasm-opt binaryen-version_122/bin/wasm-metadce binaryen-version_122/bin/wasm-merge /usr/bin/
-COPY --chown=opam:opam ./*.opam ./VERSION ./
-RUN opam pin -yn --kind=path --with-version=dev .
+    tar xJvf node-v22.14.0-linux-x64.tar.xz
+ENV PATH="/bench-dir/node-v22.14.0-linux-x64/bin:$PATH"
+RUN wget https://github.com/WebAssembly/binaryen/releases/download/version_122/binaryen-version_122-x86_64-linux.tar.gz && \
+    tar xzvf binaryen-version_122-x86_64-linux.tar.gz
+ENV PATH="/bench-dir/binaryen-version_122/bin:$PATH"
+RUN opam install --fake binaryen-bin
+COPY --chown=opam:opam ./*.opam ./
+RUN opam pin -yn --with-version=dev .
 RUN opam install -y --deps-only js_of_ocaml-compiler
 COPY --chown=opam:opam . ./
 RUN opam install -y wasm_of_ocaml-compiler

dune-project

@@ -141,6 +141,7 @@
  (depends
   (ocaml (>= 4.14))
   (js_of_ocaml (= :version))
+  (js_of_ocaml-compiler (= :version))
   (num :with-test)
   (ppx_expect (and (>= v0.14.2) :with-test))
   (ppxlib (>= 0.15.0))

wasm_of_ocaml-compiler.opam

@@ -15,6 +15,7 @@ depends: [
   "dune" {>= "3.17"}
   "ocaml" {>= "4.14"}
   "js_of_ocaml" {= version}
+  "js_of_ocaml-compiler" {= version}
   "num" {with-test}
   "ppx_expect" {>= "v0.14.2" & with-test}
   "ppxlib" {>= "0.15.0"}