add support for multiple arguments

docker/execute

@@ -14,6 +14,11 @@ fi
 lang=$1
 filepath=$(realpath $2)
 file=$(basename $2)
+argpath="/tmp/$(date +%s%N).args"
+arg=$(basename $argpath)
+
+# write arg file
+echo "${@:3}" > $argpath
 
 bin=
 case "$lang" in
@@ -64,6 +69,7 @@ docker run \
     --rm \
     --log-driver none \
     -v $filepath:/$file:ro \
+    -v $argpath:/$arg:ro \
     -v $dir/executors/python2:/executor_python2:ro \
     -v $dir/executors/python3:/executor_python3:ro \
     -v $dir/executors/ruby:/executor_ruby:ro \
@@ -79,6 +85,7 @@ docker run \
     piston \
     runuser \
         -l runner \
-        -c "bash /$bin /$file $file ${@:3} 2>&1 | head -c 65536"
+        -c "bash /$bin /$file $file 2>&1 | head -c 65536"
 
 rm -f /tmp/$file
+rm -f /tmp/$arg