fix adding nsjail based on arg

Dockerfile

@@ -4,7 +4,7 @@ WORKDIR /nsjail
 
 ARG nsjail=""
 
-RUN if [[ "$nsjail" == "true" ]]; then apt-get -y update \
+RUN  if [ "$nsjail" = "true" ]; then apt-get -y update \
     && apt-get install -y \
     bison=2:3.3.* \
     flex=2.6.* \
@@ -18,9 +18,9 @@ RUN if [[ "$nsjail" == "true" ]]; then apt-get -y update \
     protobuf-compiler=3.6.*; fi
 
 
-RUN if [[ "$nsjail" == "true" ]]; then git clone -b master --single-branch https://github.com/google/nsjail.git . \
+RUN if [ "$nsjail" = "true" ]; then git clone -b master --single-branch https://github.com/google/nsjail.git . \
     && git checkout dccf911fd2659e7b08ce9507c25b2b38ec2c5800; fi
-RUN if [[ "$nsjail" == "true" ]]; then make; else touch nsjail; fi
+RUN if [ "$nsjail" = "true" ]; then make; else touch nsjail; fi
 
 FROM rust:slim-buster AS rust_base
 

backend/windmill-worker/src/worker.rs

@@ -1017,7 +1017,7 @@ async fn handle_code_execution_job(
             r#"
 mount {{
     src: "{worker_dir}/{}/shared"
-    dst: "/shared"
+    dst: "/tmp/shared"
     is_bind: true
     rw: true
 }}
@@ -1029,7 +1029,7 @@ mount {{
     } else {
         r#"
 mount {
-    dst: "/shared"
+    dst: "/tmp/shared"
     fstype: "tmpfs"
     rw: true
     options: "size=500000000"