diff --git a/Dockerfile b/Dockerfile
index d013dbe..7d535e9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,39 +1,29 @@
-FROM ubuntu:latest
+FROM continuumio/miniconda3:latest
 
 # Install dependencies and upgrade
-RUN apt-get update && apt-get install -y \
-    build-essential bzip2 ca-certificates curl git mesa-common-dev libglu1-mesa-dev python3-dev \
-    && apt-get upgrade -y \
+RUN apt-get update -qq && apt-get install -q -y --no-install-recommends \
+    build-essential libxerces-c-dev \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
-# Install miniconda and activate base on startup
-ENV PATH /opt/conda/bin:/opt/conda/condabin:${PATH}
-ENV CMAKE_PREFIX_PATH=/opt/conda
-
-RUN curl -o miniconda_installer.sh https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh \
-    && bash miniconda_installer.sh -b -p /opt/conda \
-    && rm miniconda_installer.sh \
-    && conda install -y -c conda-forge mamba \
-    && mamba init bash \
-    && mamba config --set auto_activate_base true \
-    && mamba clean -ya
-
-# Install conda packages (geant4 is not available for aarch64 at the time of writing)
-RUN mamba install -y -c conda-forge geant4 \
-    # remove data package to reduce image size (we should not install them in the first place, how?)
-    # && mamba remove -y $(mamba list | grep 'geant4-data' | awk '{print $1}') \
-    # && rm -rf /opt/conda/share/Geant4/data/* \
-    && mamba clean -ya
-
-# Copy files
+# Need a more recent version of cmake
+RUN conda install -y cmake
+
+ARG CMAKE_CXX_STANDARD=20
+ARG GEANT4_VERSION=v11.1.3
+
+RUN git clone https://github.com/Geant4/geant4.git /tmp/geant4 --branch=${GEANT4_VERSION} --depth=1 \
+    && cmake -B /tmp/geant4/build -S /tmp/geant4 -DCMAKE_INSTALL_PREFIX=/usr/local/ -DCMAKE_CXX_STANDARD=$CMAKE_CXX_STANDARD \
+    -DGEANT4_INSTALL_DATA=ON -DGEANT4_USE_QT=OFF -DGEANT4_INSTALL_EXAMPLES=OFF -DGEANT4_USE_GDML=ON \
+    -DGEANT4_BUILD_STORE_TRAJECTORY=OFF -DGEANT4_BUILD_VERBOSE_CODE=OFF \
+    && cmake --build /tmp/geant4/build -j$(nproc) --target install \
+    && rm -rf /tmp/geant4
+
+# RUN geant4-config --instal-datasets
+
 COPY . /source
 
 # Build and install
-RUN cd source && python -m pip install .
-
-RUN echo "#!/bin/bash\nexec /opt/conda/bin/conda run --no-capture-output -n base /opt/conda/bin/python \"\$@\"" > /usr/local/bin/entrypoint.sh \
-    && chmod +x /usr/local/bin/entrypoint.sh
+RUN pip install /source && rm -rf /source
 
-# Set the entry point to the script
-ENTRYPOINT [ "/usr/local/bin/entrypoint.sh" ]
+ENTRYPOINT ["python"]