diff --git a/.dockerignore b/.dockerignore
index 6e19512..989d80b 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,2 +1,3 @@
 .dockerignore
+.git
 Dockerfile
diff --git a/Dockerfile b/Dockerfile
index bb05c68..5d8e1b5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,19 +10,22 @@ ARG CC=gcc-9
 ARG CXX=g++-9
 
 RUN apt-get update && \
-    apt-get install -y autoconf automake libtool pkg-config libgl1-mesa-glx && \
+    apt-get install -y autoconf automake libtool pkg-config && \
     apt-get install -y gcc-9 g++-9 && \
     apt-get install -y cmake git wget && \
     apt-get install -y libarmadillo-dev && \
     apt-get install -y libcfitsio-dev && \
     apt-get install -y libfftw3-dev && \
+    apt-get install -y libgl1 && \
     apt-get install -y libgsl-dev && \
     apt-get install -y libsharp-dev && \
     apt-get install -y libhealpix-cxx-dev && \
     apt-get install -y healpy-data && \
+    apt-get install -y python3 python3-pip python3-venv && \
     apt-get clean
 
-RUN wget https://github.com/catchorg/Catch2/archive/refs/tags/v3.1.0.tar.gz && \
+RUN cd /home && \
+    wget https://github.com/catchorg/Catch2/archive/refs/tags/v3.1.0.tar.gz && \
     tar -xvf v3.1.0.tar.gz && \
     cd Catch2-3.1.0 && \
     cmake -Bbuild -H. -DBUILD_TESTING=OFF && \
@@ -30,27 +33,26 @@ RUN wget https://github.com/catchorg/Catch2/archive/refs/tags/v3.1.0.tar.gz && \
 
 ENV HEALPIX /usr/share/healpy
 
-RUN wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh && \
-    bash Miniconda3-latest-Linux-x86_64.sh -b -p /miniconda && \
-    rm Miniconda3-latest-Linux-x86_64.sh
-
-ENV PATH /miniconda/bin:${PATH}
-
-RUN conda create -n sparse2d python=3.10 pip -y
+RUN python3 -m venv /venv
 
-ENV PATH /miniconda/envs/sparse2d/bin:${PATH}
+RUN source /venv/bin/activate && \
+    pip install --upgrade pip
 
-RUN pip install pybind11 jupyter
+RUN source /venv/bin/activate && \
+    pip install jupyter
 
 COPY . /home
 
-RUN cd /home && \
+RUN source /venv/bin/activate && \
+    cd /home && \
     mkdir build && \
     cd build && \
     cmake .. && \
-    make && \
+    make -j8 && \
     make install
 
 ENV PYTHONPATH /home/build/src
 
+RUN echo "source /venv/bin/activate" >> ~/.bashrc
+
 RUN echo -e '#!/bin/bash\njupyter notebook --port=8888 --no-browser --ip=0.0.0.0 --allow-root' > /usr/bin/notebook && chmod +x /usr/bin/notebook
diff --git a/README.md b/README.md
index 745c43e..7271114 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,9 @@ docker pull ghcr.io/cosmostat/sparse2d:master
 
 No further installation is required.
 
+> Note that you will need to [log in](https://docs.docker.com/reference/cli/docker/login/) to the GitHub Container Registry.  
+> `docker login ghcr.io`
+
 ### Run a Docker container
 
 To run a container on data in your current working directory, simply run: