diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index ce494a337..b008efdc3 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,108 +1,4 @@
-FROM ubuntu:focal as base
-## Inspiration from https://stackoverflow.com/questions/67680726/installing-haskells-cabal-or-ghcup-inside-a-dockerfile-wont-work
-ENV TZ=Europe/Berlin
-ARG USERNAME=vscode
-
-
-ENV USERNAME=${USERNAME} \
-    USER_UID=1000 \
-    USER_GID=1000 \
-    DEBIAN_FRONTEND=noninteractive \
-    LANG=C.UTF8 \
-    WDIR=/home/${USERNAME}
-
-
-# install dependencies (source: https://www.haskell.org/ghcup/install/ )
-RUN \
-    apt-get update -y && \
-    apt-get install -y --no-install-recommends \
-    curl \
-    libnuma-dev \
-    zlib1g-dev \
-    libgmp-dev \
-    libgmp10 \
-    git \
-    wget \
-    lsb-release \
-    software-properties-common \
-    gnupg2 \
-    apt-transport-https \
-    gcc \
-    autoconf \
-    automake \
-    build-essential \
-    && rm -rf /var/lib/apt/lists/*
-
-RUN groupadd --gid $USER_GID $USERNAME && \
-    useradd -ms /bin/bash -K MAIL_DIR=/dev/null --uid $USER_UID --gid $USER_GID -m $USERNAME && \
-    mkdir -p /etc/sudoers.d && \
-    echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME && \
-    chmod 0440 /etc/sudoers.d/$USERNAME
-
-USER ${USER_UID}:${USER_GID}
-
-WORKDIR ${WDIR}
-
-
-# install gpg keys
-# ARG GPG_KEY=BA3CBA3FFE22B574
-# RUN gpg --batch --keyserver keys.openpgp.org --recv-keys $GPG_KEY
-# manual installation: see https://www.haskell.org/ghcup/install/#manual-installation
-
-# install ghcup
-# Inspiration: http://haskell.org/ghcup/install
-# Install ghcup as the 'vscode' user
-RUN curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-
-# Add ghcup and cabal to the PATH
-ENV PATH="${WDIR}/.cabal/bin:${WDIR}/.ghcup/bin:${PATH}"
-
-ARG GHC=8.10.7
-ARG CABAL=3.10.1.0
-ARG HLS=2.0.0.1
-ARG STACK=2.11.1
-
-# install GHC and cabal
-
-RUN ghcup install ghc --set ${GHC}
-RUN ghcup install cabal --set ${CABAL}
-RUN ghcup install stack --set ${STACK}
-RUN ghcup install hls --set ${HLS}
-
-FROM base as tools
-
-# Install global packages.
-# Versions are pinned, since we don't want to accidentally break anything (by always installing latest).
-RUN cabal install -v haskell-dap-0.0.15.0
-# RUN cabal install -v ghci-dap-0.0.19.0
-# RUN cabal install -v haskell-debug-adapter-0.0.37.0
-# RUN cabal install -v hlint-3.2.7
-# RUN cabal install -v apply-refact-0.9.3.0
-# RUN cabal install -v retrie-1.1.0.0
-RUN cabal install -v stylish-haskell-0.13.0.0
-# RUN cabal install -v hoogle-5.0.18.3
-RUN cabal install -v ormolu-0.1.3.1
-# RUN cabal install -v liquidhaskell-0.8.10.2
-
-# Generate hoogle db
-# RUN hoogle generate && stack hoogle
-
-# create a `binbin` directory, that contains the executables themselves. In .cabal/bin most (all?) files are symbolic links
-RUN mkdir ${WDIR}/.cabal/binbin
-RUN cp -L ${WDIR}/.cabal/bin/* ${WDIR}/.cabal/binbin
-
-FROM base as dev
-COPY --from=tools ${WDIR}/.cabal/binbin ${WDIR}/.cabal/bin
-
-
-# # Add just the .cabal file to capture dependencies
-COPY ./package.yaml ${WDIR}/package.yaml
-COPY ./stack.yaml ${WDIR}/stack.yaml
-
-# Docker will cache this command as a layer, freeing us up to
-# modify source code without re-installing dependencies
-# (unless one of the copied files changes!)
-RUN stack build --only-dependencies -j4
+FROM ampersandtarski/ampersand-devcontainer:latest
 
 ENV DEBIAN_FRONTEND=dialog
 
diff --git a/.devcontainer/DockerfileUpstream b/.devcontainer/DockerfileUpstream
index 9e876bcdf..ce494a337 100644
--- a/.devcontainer/DockerfileUpstream
+++ b/.devcontainer/DockerfileUpstream
@@ -1,4 +1,4 @@
-FROM ubuntu:focal
+FROM ubuntu:focal as base
 ## Inspiration from https://stackoverflow.com/questions/67680726/installing-haskells-cabal-or-ghcup-inside-a-dockerfile-wont-work
 ENV TZ=Europe/Berlin
 ARG USERNAME=vscode
@@ -64,16 +64,38 @@ ARG STACK=2.11.1
 
 # install GHC and cabal
 
-RUN ghcup install ghc ${GHC}
-RUN ghcup set ghc ${GHC}
-RUN ghcup install cabal ${CABAL}
-RUN ghcup set cabal ${CABAL}
-RUN ghcup install stack ${STACK}
-RUN ghcup set stack ${STACK}
-RUN ghcup install hls ${HLS}
-RUN ghcup set hls ${HLS}
+RUN ghcup install ghc --set ${GHC}
+RUN ghcup install cabal --set ${CABAL}
+RUN ghcup install stack --set ${STACK}
+RUN ghcup install hls --set ${HLS}
 
-# Add just the .cabal file to capture dependencies
+FROM base as tools
+
+# Install global packages.
+# Versions are pinned, since we don't want to accidentally break anything (by always installing latest).
+RUN cabal install -v haskell-dap-0.0.15.0
+# RUN cabal install -v ghci-dap-0.0.19.0
+# RUN cabal install -v haskell-debug-adapter-0.0.37.0
+# RUN cabal install -v hlint-3.2.7
+# RUN cabal install -v apply-refact-0.9.3.0
+# RUN cabal install -v retrie-1.1.0.0
+RUN cabal install -v stylish-haskell-0.13.0.0
+# RUN cabal install -v hoogle-5.0.18.3
+RUN cabal install -v ormolu-0.1.3.1
+# RUN cabal install -v liquidhaskell-0.8.10.2
+
+# Generate hoogle db
+# RUN hoogle generate && stack hoogle
+
+# create a `binbin` directory, that contains the executables themselves. In .cabal/bin most (all?) files are symbolic links
+RUN mkdir ${WDIR}/.cabal/binbin
+RUN cp -L ${WDIR}/.cabal/bin/* ${WDIR}/.cabal/binbin
+
+FROM base as dev
+COPY --from=tools ${WDIR}/.cabal/binbin ${WDIR}/.cabal/bin
+
+
+# # Add just the .cabal file to capture dependencies
 COPY ./package.yaml ${WDIR}/package.yaml
 COPY ./stack.yaml ${WDIR}/stack.yaml