diff --git a/software/OpenPLC/Dockerfile b/software/OpenPLC/Dockerfile
index 1e7676f..539abe1 100644
--- a/software/OpenPLC/Dockerfile
+++ b/software/OpenPLC/Dockerfile
@@ -2,9 +2,7 @@ FROM ubuntu:22.04
 
 COPY ./OpenPLC_v3/ /CybICS/OpenPLC_v3/
 WORKDIR /CybICS/OpenPLC_v3/
-RUN export GNUMAKEFLAGS=-j$(nproc --all) \
-    && alias make='make -j$(nproc --all)' \
-    && ./install.sh docker
+RUN ./install.sh docker
 
 # copy files after compile the main part to reduce re-compile time on changes on cybICS.st
 WORKDIR /CybICS/OpenPLC_v3/webserver