diff --git a/CAL/Docker/HolographyBuild/Dockerfile b/CAL/Docker/HolographyBuild/Dockerfile
index 1c8bc2ca434adf7f0d1345acef7d97539e3bb217..bc1603458990b14580787d1398da1485c7920513 100644
--- a/CAL/Docker/HolographyBuild/Dockerfile
+++ b/CAL/Docker/HolographyBuild/Dockerfile
@@ -11,3 +11,4 @@ RUN mkdir -p /root/src/build/gnucxx11_debug
 WORKDIR /root/src/build/gnucxx11_debug
 RUN cmake ../../ -DUSE_LOG4CPLUS=OFF -DBUILD_PACKAGES=CAL -DCMAKE_INSTALL_PREFIX=/opt/lofar
 RUN make install
+COPY ./entrypoint.sh /root/entrypoint.sh
diff --git a/CAL/Docker/HolographyBuild/entrypoint.sh b/CAL/Docker/HolographyBuild/entrypoint.sh
new file mode 100644
index 0000000000000000000000000000000000000000..60255aed76d1d2eb960abfdae2e1ec068ff23afb
--- /dev/null
+++ b/CAL/Docker/HolographyBuild/entrypoint.sh
@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+source /opt/lofar/lofarinit.sh
\ No newline at end of file