Fix entrypoint script

Author: fabasoad

.gitignore

@@ -1 +1,2 @@
-.vscode/
+.vscode/
+docker-compose.yml

HelloWorld.pas

@@ -7,5 +7,4 @@
   Classes;
 begin
   WriteLn('Hello World!');
-  ReadLn;
 end.

docker-entrypoint.sh

@@ -1,3 +1,5 @@
 #!/bin/sh -l
-result=$(fpc "$1")
+# while true; do sleep 30; done;
+fpc "$1"
+result=$(${1%.*})
 echo ::set-output name=result::"$result"