diff --git a/CMakeLists.txt b/CMakeLists.txt
index b2ba95a..49f74f1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,18 +19,12 @@ include_directories(${CMAKE_SOURCE_DIR}/aocommon/include)
 find_package(AOFlagger 3 REQUIRED)
 include_directories(${AOFLAGGER_INCLUDE_DIR})
 
-find_package(Threads REQUIRED)
+find_package(CFITSIO REQUIRED)
+include_directories(${CFITSIO_INCLUDE_DIRS})
 
-find_package(PythonLibs 3 REQUIRED)
-find_package(PythonInterp 3 REQUIRED)
-message(STATUS "Using python version ${PYTHON_VERSION_STRING}")
+find_package(Threads REQUIRED)
 
-set(BOOSTPY ${PYTHON_VERSION_MAJOR}${PYTHON_VERSION_MINOR})
-find_package(Boost 1.55.0 REQUIRED COMPONENTS date_time filesystem python${BOOSTPY})
-set(BOOST_PART_LIBRARIES ${Boost_LIBRARIES})
-# Numpy3 is in some versions of Boost part of python3, so don't 'require' it:                                                                                           
-find_package(Boost 1.55.0 COMPONENTS numpy${BOOSTPY})
-set(Boost_LIBRARIES ${BOOST_PART_LIBRARIES} ${Boost_LIBRARIES})
+find_package(Boost 1.55.0 REQUIRED COMPONENTS date_time filesystem)
 
 set(CASACORE_MAKE_REQUIRED_EXTERNALS_OPTIONAL TRUE)
 find_package(Casacore REQUIRED COMPONENTS casa ms tables measures fits scimath scimath_f)
@@ -61,8 +55,7 @@ include_directories(${CMAKE_CURRENT_BINARY_DIR})
 add_executable(aartfaac2ms main.cpp aartfaac2ms.cpp aartfaacms.cpp averagingwriter.cpp fitsuser.cpp fitswriter.cpp mswriter.cpp progressbar.cpp stopwatch.cpp threadedwriter.cpp)
 target_link_libraries(aartfaac2ms
 	${AOFLAGGER_LIB} ${CASACORE_LIBRARIES}
-	${Boost_SYSTEM_LIBRARY} ${Boost_DATE_TIME_LIBRARY} ${Boost_PYTHON_LIBRARIES}
-	${PYTHON_LIBRARIES}
+	${Boost_SYSTEM_LIBRARY} ${Boost_DATE_TIME_LIBRARY}
 	Threads::Threads)
 
 add_executable(afedit afedit.cpp)
diff --git a/scripts/docker/Ubuntu20 b/scripts/docker/Ubuntu20
new file mode 100644
index 0000000..66b0968
--- /dev/null
+++ b/scripts/docker/Ubuntu20
@@ -0,0 +1,40 @@
+FROM ubuntu:20.04
+
+RUN export DEBIAN_FRONTEND=noninteractive && apt-get update && \
+    apt-get install -y \
+    cmake \
+    build-essential \
+    pkg-config \
+    git \
+    casacore-data casacore-dev \
+    libblas-dev liblapack-dev \
+    liblua5.3-dev \
+    python3 \
+    libpython3-dev \
+    libboost-date-time-dev libboost-test-dev \
+    libboost-system-dev libboost-filesystem-dev \
+    libgtkmm-3.0-dev \
+    libcfitsio-dev \
+    libfftw3-dev \
+    libgsl-dev \
+    libhdf5-serial-dev \    
+    libpng-dev
+
+RUN \
+  mkdir /aoflagger && \
+  cd /aoflagger && \
+  git clone https://gitlab.com/aroffringa/aoflagger.git src && \
+  mkdir /aoflagger/build && \
+  cd /aoflagger/build && \
+  cmake ../src && \
+  make install -j`nproc --all`
+
+ADD . /src
+WORKDIR /src
+
+RUN \
+  mkdir /build && \
+  cd /build && \
+  cmake ../src && \
+  make install -j`nproc --all` && \
+  aartfaac2ms --version