constrain go, add user home dir

docker/Dockerfile

@@ -9,7 +9,7 @@ RUN apt-get -y install ruby
 RUN apt-get -y install nodejs
 RUN apt-get -y install golang
 
-RUN useradd -g root runner
+RUN useradd -m runner
 
 RUN echo '@runner soft nproc 16' >> /etc/security/limits.conf
 RUN echo '@runner hard nproc 16' >> /etc/security/limits.conf

docker/executors/go

@@ -1,3 +1,9 @@
 #!/bin/sh
 
-go run $1
+file=$1
+
+go build $file
+
+file=${file%%.*}
+
+timeout -s HUP 2 ./$file