diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index cc47dfd..47fc436 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -10,8 +10,9 @@ RUN apt-get update && apt-get install nodejs -y
 
 RUN rustup target install wasm32-unknown-unknown
 
-USER vscode
 RUN cargo install wasm-bindgen-cli
 RUN cargo install wasm-opt
 RUN cargo install wasm-pack
 RUN cargo install just
+
+RUN chmod -R g+w $CARGO_HOME/registry
\ No newline at end of file
diff --git a/justfile b/justfile
index e0a86eb..bbd6559 100644
--- a/justfile
+++ b/justfile
@@ -32,8 +32,8 @@ test-unit:
 test-integration:
   cargo test --test integration_tests
 test-wasm-firefox:
-  wasm-pack test --headless --firefox --test wasm_browser
+  (which geckodriver && wasm-pack test --headless --firefox --test wasm_browser) || echo "Install geckodriver to run Firefox tests."
 test-wasm-chrome:
-  wasm-pack test --headless --chrome --test wasm_browser
+  (which chromedriver && wasm-pack test --headless --chrome --test wasm_browser) || echo "Install chromedriver to run Chrome tests."
 test-wasm-node:
   wasm-pack test --node --test wasm_node