diff --git a/zokrates_js/Cargo.toml b/zokrates_js/Cargo.toml
index 92b79f0a..fb6f1e07 100644
--- a/zokrates_js/Cargo.toml
+++ b/zokrates_js/Cargo.toml
@@ -18,4 +18,8 @@ zokrates_field = { path = "../zokrates_field" }
 zokrates_abi = { path = "../zokrates_abi" }
 
 [target."cfg(debug_assertions)".dependencies]
-console_error_panic_hook = "0.1.5"
\ No newline at end of file
+console_error_panic_hook = "0.1.5"
+
+# workaround until wasm-opt is fixed
+[package.metadata.wasm-pack.profile.release]
+wasm-opt = false
\ No newline at end of file
diff --git a/zokrates_js/Dockerfile b/zokrates_js/Dockerfile
index 3d4115e5..85a82439 100644
--- a/zokrates_js/Dockerfile
+++ b/zokrates_js/Dockerfile
@@ -1,15 +1,8 @@
-FROM rustlang/rust:nightly as build
-
-RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh -s -- -y
+FROM dark64/rust-wasm-env:latest
 
 COPY . src
-RUN cd src/zokrates_js && wasm-pack build --out-name index --release --target bundler && rm -rf target/
+RUN cd src/zokrates_js && npm run build && rm -rf target/
 
-FROM node:10-alpine
-
-COPY --from=build src/zokrates_js src/zokrates_js
-COPY --from=build src/zokrates_stdlib src/zokrates_stdlib
-
-RUN cd src/zokrates_js && npm run setup \
-    && cd / && mkdir build && mv src/zokrates_js/* /build \
+RUN cd / && mkdir build \
+    && mv src/zokrates_js/* /build \
     && rm -rf src
\ No newline at end of file