diff --git a/daemons/Dockerfile b/daemons/Dockerfile
index da0fd6f..cea2369 100644
--- a/daemons/Dockerfile
+++ b/daemons/Dockerfile
@@ -2,6 +2,7 @@ FROM python:3.10-alpine
 
 RUN mkdir /opt/dcc && pip -q install pyserial
 ADD net-to-serial.py config.ini /opt/dcc
+RUN python3 -q -m compileall /opt/dcc/net-to-serial.py
 
 EXPOSE 2560/tcp
 
diff --git a/daemons/__init__.py b/daemons/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/daemons/simulator/Dockerfile b/daemons/simulator/Dockerfile
index da0debf..4ba6659 100644
--- a/daemons/simulator/Dockerfile
+++ b/daemons/simulator/Dockerfile
@@ -2,6 +2,6 @@ FROM dcc/net-to-serial
 
 RUN apk update && apk add qemu-system-avr && mkdir /io
 ADD start.sh /opt/dcc
-ADD CommandStation-EX-uno-*.elf /io
+ADD CommandStation-EX*.elf /io
 
 ENTRYPOINT ["/opt/dcc/start.sh"]
diff --git a/daemons/simulator/start.sh b/daemons/simulator/start.sh
index be9abc1..6471bc3 100755
--- a/daemons/simulator/start.sh
+++ b/daemons/simulator/start.sh
@@ -2,11 +2,12 @@
 
 PTY=0
 
+# if container is run with -ti pts/0 is already taken
 if [ -c /dev/pts/0 ]; then
     PTY=1
 fi
 
 sed -i "s/ttyACM0/pts\/${PTY}/" /opt/dcc/config.ini
 
-qemu-system-avr -machine uno -bios /io/CommandStation-EX-uno-*.elf -serial pty -daemonize
+qemu-system-avr -machine uno -bios /io/CommandStation-EX*.elf -serial pty -daemonize
 /opt/dcc/net-to-serial.py