diff --git a/docker/Dockerfile b/docker/Dockerfile
index 053d00b..42b5764 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -22,7 +22,7 @@ RUN useradd -m runner
 
 RUN echo 'runner soft nproc 16' >> /etc/security/limits.conf
 RUN echo 'runner hard nproc 16' >> /etc/security/limits.conf
-RUN echo 'runner soft nofile 128' >> /etc/security/limits.conf
-RUN echo 'runner hard nofile 128' >> /etc/security/limits.conf
+RUN echo 'runner soft nofile 256' >> /etc/security/limits.conf
+RUN echo 'runner hard nofile 256' >> /etc/security/limits.conf
 
 WORKDIR /tmp
diff --git a/docker/executors/csharp b/docker/executors/csharp
index 224385c..5454d08 100755
--- a/docker/executors/csharp
+++ b/docker/executors/csharp
@@ -1,4 +1,4 @@
 #!/bin/sh
 
-mcs $1 -out:binary
+mcs $(echo $1 | sed 's/\///') -out:binary
 timeout -s KILL 3 mono binary