diff --git a/env/bitbucket/Dockerfile b/env/bitbucket/Dockerfile
index 079b2f37..3a9d9003 100644
--- a/env/bitbucket/Dockerfile
+++ b/env/bitbucket/Dockerfile
@@ -1,96 +1,180 @@
 # create a new version of this docker image
-# > docker build -t iterativ/vbv-lernwelt-bitbucket .
+# > docker build --platform linux/amd64 -t iterativ/vbv-lernwelt-bitbucket .
 # push new version to Docker Hub
 # > docker push iterativ/vbv-lernwelt-bitbucket
 # run locally with directory mounted
 # > docker run -v "$(pwd)":/src -it iterativ/vbv-lernwelt-bitbucket /bin/bash
 
-FROM python:3.10-bullseye
+FROM cypress/included:10.9.0
 MAINTAINER Daniel Egger <daniel.egger@iterativ.ch>
 
-ARG DEBIAN_FRONTEND=noninteractive
+# install python see https://github.com/docker-library/python
+ENV LANG C.UTF-8
+ENV LC_ALL C.UTF-8
 
-# Install node prereqs, nodejs and yarn
-# Ref: https://deb.nodesource.com/setup_16.x
-# Ref: https://yarnpkg.com/en/docs/install
-# https://github.com/nikolaik/docker-python-nodejs
-RUN \
-  echo "deb https://deb.nodesource.com/node_16.x bullseye main" > /etc/apt/sources.list.d/nodesource.list && \
-  wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - && \
-  echo "deb https://dl.yarnpkg.com/debian/ stable main" > /etc/apt/sources.list.d/yarn.list && \
-  wget -qO- https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && \
-  apt-get update && \
-  apt-get install -yqq nodejs yarn && \
-  pip install -U pip && pip install pipenv && \
-  npm i -g npm@^6
 
-# Install Cypress deps
-# https://github.com/cypress-io/cypress-docker-images/blob/master/base/16.5.0/Dockerfile
-RUN apt-get update && \
-  apt-get install --no-install-recommends -y \
-  libgtk2.0-0 \
-  libgtk-3-0 \
-  libnotify-dev \
-  libgconf-2-4 \
-  libgbm-dev \
-  libnss3 \
-  libxss1 \
-  libasound2 \
-  libxtst6 \
-  xauth \
-  xvfb \
-  # install text editors
-  vim-tiny \
-  nano \
-  # install emoji font
-  fonts-noto-color-emoji \
-  # install Chinese fonts
-  # this list was copied from https://github.com/jim3ma/docker-leanote
-  fonts-arphic-bkai00mp \
-  fonts-arphic-bsmi00lp \
-  fonts-arphic-gbsn00lp \
-  fonts-arphic-gkai00mp \
-  fonts-arphic-ukai \
-  fonts-arphic-uming \
-  ttf-wqy-zenhei \
-  ttf-wqy-microhei \
-  xfonts-wqy
+# ensure local python is preferred over distribution python
+ENV PATH /usr/local/bin:$PATH
 
-RUN npm --version
+# http://bugs.python.org/issue19846
+# > At the moment, setting "LANG=C" on a Linux system *fundamentally breaks Python 3*, and that's not OK.
+ENV LANG C.UTF-8
 
-RUN npm install -g yarn@latest --force
-RUN yarn --version
+# runtime dependencies
+RUN set -eux; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        ca-certificates \
+        netbase \
+        tzdata \
+    ; \
+    rm -rf /var/lib/apt/lists/*
 
-# a few environment variables to make NPM installs easier
-# good colors for most applications
-ENV TERM xterm
-# avoid million NPM install messages
-ENV npm_config_loglevel warn
-# allow installing when the main user is root
-ENV npm_config_unsafe_perm true
+ENV GPG_KEY A035C8C19219BA821ECEA86B64E628F8D684696D
+ENV PYTHON_VERSION 3.10.7
 
-# Node libraries
-RUN node -p process.versions
+RUN set -eux; \
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        dpkg-dev \
+        gcc \
+        gnupg dirmngr \
+        libbluetooth-dev \
+        libbz2-dev \
+        libc6-dev \
+        libexpat1-dev \
+        libffi-dev \
+        libgdbm-dev \
+        liblzma-dev \
+        libncursesw5-dev \
+        libreadline-dev \
+        libsqlite3-dev \
+        libssl-dev \
+        make \
+        tk-dev \
+        uuid-dev \
+        wget \
+        xz-utils \
+        zlib1g-dev \
+    ; \
+    \
+    wget -O python.tar.xz "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz"; \
+    wget -O python.tar.xz.asc "https://www.python.org/ftp/python/${PYTHON_VERSION%%[a-z]*}/Python-$PYTHON_VERSION.tar.xz.asc"; \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys "$GPG_KEY"; \
+    gpg --batch --verify python.tar.xz.asc python.tar.xz; \
+    command -v gpgconf > /dev/null && gpgconf --kill all || :; \
+    rm -rf "$GNUPGHOME" python.tar.xz.asc; \
+    mkdir -p /usr/src/python; \
+    tar --extract --directory /usr/src/python --strip-components=1 --file python.tar.xz; \
+    rm python.tar.xz; \
+    \
+    cd /usr/src/python; \
+    gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; \
+    ./configure \
+        --build="$gnuArch" \
+        --enable-loadable-sqlite-extensions \
+        --enable-optimizations \
+        --enable-option-checking=fatal \
+        --enable-shared \
+        --with-lto \
+        --with-system-expat \
+        --without-ensurepip \
+    ; \
+    nproc="$(nproc)"; \
+    make -j "$nproc" \
+        LDFLAGS="-Wl,--strip-all" \
+    ; \
+    make install; \
+    \
+    cd /; \
+    rm -rf /usr/src/python; \
+    \
+    find /usr/local -depth \
+        \( \
+            \( -type d -a \( -name test -o -name tests -o -name idle_test \) \) \
+            -o \( -type f -a \( -name '*.pyc' -o -name '*.pyo' -o -name 'libpython*.a' \) \) \
+        \) -exec rm -rf '{}' + \
+    ; \
+    \
+    ldconfig; \
+    \
+    apt-mark auto '.*' > /dev/null; \
+    apt-mark manual $savedAptMark; \
+    find /usr/local -type f -executable -not \( -name '*tkinter*' \) -exec ldd '{}' ';' \
+        | awk '/=>/ { print $(NF-1) }' \
+        | sort -u \
+        | xargs -r dpkg-query --search \
+        | cut -d: -f1 \
+        | sort -u \
+        | xargs -r apt-mark manual \
+    ; \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*; \
+    \
+    python3 --version
 
-# Show where Node loads required modules from
-RUN node -p 'module.paths'
+# make some useful symlinks that are expected to exist ("/usr/local/bin/python" and friends)
+RUN set -eux; \
+    for src in idle3 pydoc3 python3 python3-config; do \
+        dst="$(echo "$src" | tr -d 3)"; \
+        [ -s "/usr/local/bin/$src" ]; \
+        [ ! -e "/usr/local/bin/$dst" ]; \
+        ln -svT "$src" "/usr/local/bin/$dst"; \
+    done
 
-# install postgresql
- RUN apt-get install -y postgresql postgresql-contrib libpq-dev
+# if this is called "PIP_VERSION", pip explodes with "ValueError: invalid truth value '<VERSION>'"
+ENV PYTHON_PIP_VERSION 22.2.2
+# https://github.com/docker-library/python/issues/365
+ENV PYTHON_SETUPTOOLS_VERSION 63.2.0
+# https://github.com/pypa/get-pip
+ENV PYTHON_GET_PIP_URL https://github.com/pypa/get-pip/raw/5eaac1050023df1f5c98b173b248c260023f2278/public/get-pip.py
+ENV PYTHON_GET_PIP_SHA256 5aefe6ade911d997af080b315ebcb7f882212d070465df544e1175ac2be519b4
+
+RUN set -eux; \
+    \
+    savedAptMark="$(apt-mark showmanual)"; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends wget; \
+    \
+    wget -O get-pip.py "$PYTHON_GET_PIP_URL"; \
+    echo "$PYTHON_GET_PIP_SHA256 *get-pip.py" | sha256sum -c -; \
+    \
+    apt-mark auto '.*' > /dev/null; \
+    [ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
+    apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+    rm -rf /var/lib/apt/lists/*; \
+    \
+    export PYTHONDONTWRITEBYTECODE=1; \
+    \
+    python get-pip.py \
+        --disable-pip-version-check \
+        --no-cache-dir \
+        --no-compile \
+        "pip==$PYTHON_PIP_VERSION" \
+        "setuptools==$PYTHON_SETUPTOOLS_VERSION" \
+    ; \
+    rm -f get-pip.py; \
+    \
+    pip --version
+
+# install postgresql \
+RUN apt install curl ca-certificates gnupg
+RUN curl https://www.postgresql.org/media/keys/ACCC4CF8.asc \
+| gpg --dearmor \
+| tee /etc/apt/trusted.gpg.d/apt.postgresql.org.gpg >/dev/null
+RUN sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ bullseye-pgdg main" > /etc/apt/sources.list.d/postgresql.list'
+RUN apt update
+RUN apt-get install -y postgresql postgresql-contrib libpq-dev
 
 # Required by python3-saml
- RUN apt-get -y install libxmlsec1-dev pkg-config gettext
+RUN apt-get -y install libxmlsec1-dev pkg-config gettext
 
 # install git-crypt
 RUN apt-get -y install git-crypt
 
-ENV LANG C.UTF-8
-ENV LC_ALL C.UTF-8
-
-# Install Google Chrome
-RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
-RUN sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
-RUN apt-get update && apt-get install -y google-chrome-stable
 
 # versions of local tools
 RUN echo  " node version:    $(node -v) \n" \
diff --git a/prepare_server.sh b/prepare_server.sh
index 100d6336..afe34335 100755
--- a/prepare_server.sh
+++ b/prepare_server.sh
@@ -73,7 +73,7 @@ else
 fi
 
 if [ "$START_BACKGROUND" = true ]; then
-    python3 server/manage.py runserver "${DJANGO_PORT}" --settings="$DJANGO_SETTINGS_MODULE" > /dev/null &
+    cd server && python3 server/manage.py runserver "${DJANGO_PORT}" --settings="$DJANGO_SETTINGS_MODULE" > /dev/null &
 else
     cd server && python3 manage.py runserver "${DJANGO_PORT}" --settings="$DJANGO_SETTINGS_MODULE"
 fi
diff --git a/trufflehog-allow.json b/trufflehog-allow.json
index 31f2054c..79605f84 100644
--- a/trufflehog-allow.json
+++ b/trufflehog-allow.json
@@ -4,6 +4,7 @@
   "ignore hash 3": "OvBgP9A2JBgiRad/mM36mkzXSXaJE9BEIENnVEmeZdITvwT09xnxLtT4twkCa8m/loMbPHsvPl0T8lRGVBwjlQ==",
   "ignore hash 4": "1NpUCSvAKLpDZL9e3tqDaUe8Kk2xAuF1tXosFjBanc4lFCgNcfBp02MD3UjB72ZS",
   "ignore hash 5": "1LhwZ0DvP4cGBgbBdCfaBQV7eiaOc4jWKdzO9WEXLFT7AaqBN6jqd0uyaZeAZ19K",
+  "ignore hash 6": "A035C8C19219BA821ECEA86B64E628F8D684696D",
   "json base64 content": "regex:\"content\": \"",
   "img base64 content": "regex:data:image/png;base64,.*"
 }
diff --git a/trufflehog-exclude-patterns.txt b/trufflehog-exclude-patterns.txt
index 79e19635..d2fe8784 100644
--- a/trufflehog-exclude-patterns.txt
+++ b/trufflehog-exclude-patterns.txt
@@ -1,5 +1,6 @@
 server/requirements/
 env_secrets/
+env/bitbucket/Dockerfile
 env/docker_local.env
 server/vbv_lernwelt/static/
 server/vbv_lernwelt/media/