Add julia executor and enable elixir in api

api/main.go

@@ -70,6 +70,7 @@ func Execute(res http.ResponseWriter, req *http.Request) {
         "c",
         "cpp", "c++",
         "csharp", "cs", "c#",
+        "elixir", "exs",
         "go",
         "java",
         "julia", "jl",

lxc/execute

@@ -57,6 +57,9 @@ case "$lang" in
 "csharp" | "cs" | "c#")
     bin=csharp
     ;;
+"elixir" | "exs")
+    bin=elixir
+    ;;
 "go")
     bin=go
     ;;

lxc/executors/elixir

@@ -0,0 +1,2 @@
+cd /tmp/$2
+runuser runner$1 -c "cd /tmp/$2 ; cat args.args ; xargs -d '\n' timeout -s KILL 3 elixir code.code"