diff --git a/.woodpecker.yml b/.woodpecker.yml
index ab19d45..62b2c3a 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -9,9 +9,7 @@ steps:
       registry: git.sandbox.iuk.hdm-stuttgart.de
       repo: specht/woodpecker-test
       cache: false
-#      tag: 0.0.1
+      tag: git.sandbox.iuk.hdm-stuttgart.de/specht/woodpecker-test:test
       context: Dockerfile
-      token: 
-        from_secret: secret_token
-    when: 
-      branch: audio
\ No newline at end of file
+      token:
+        from_secret: secret_token
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index ea09cb5..d68ab9e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1 +1,183 @@
-FROM hello-world:linux
+FROM python:3.10.8-slim-bullseye
+# debian:bullseye-20230109-slim
+ARG NB_USER="jovyan"
+ARG NB_UID="1000"
+ARG NB_GID="100"
+
+RUN apt-get update --yes && \
+    # - apt-get upgrade is run to patch known vulnerabilities in apt-get packages as
+    #   the ubuntu base image is rebuilt too seldom sometimes (less than once a month)
+    apt-get upgrade --yes && \
+    apt-get install --yes --no-install-recommends \
+    # - bzip2 is necessary to extract the micromamba executable.
+    bzip2 \
+    ca-certificates \
+    ffmpeg  \
+    git \
+    git-lfs \
+    locales \
+    curl \
+    libportaudio2  \
+    dnsutils \
+    sudo \
+    nano \
+    build-essential \
+    tini \
+    wget && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* && \
+    echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && \
+    locale-gen
+
+
+# Configure environment
+ENV CONDA_DIR=/opt/conda \
+    SHELL=/bin/bash \
+    NB_USER="${NB_USER}" \
+    NB_UID=${NB_UID} \
+    NB_GID=${NB_GID} \
+    LC_ALL=en_US.UTF-8 \
+    LANG=en_US.UTF-8 \
+    LANGUAGE=en_US.UTF-8
+ENV PATH="${CONDA_DIR}/bin:${PATH}" \
+    HOME="/home/${NB_USER}"
+
+# Copy a script that we will use to correct permissions after running certain commands
+COPY fix-permissions /usr/local/bin/fix-permissions
+RUN chmod a+rx /usr/local/bin/fix-permissions
+
+# Enable prompt color in the skeleton .bashrc before creating the default NB_USER
+# hadolint ignore=SC2016
+RUN sed -i 's/^#force_color_prompt=yes/force_color_prompt=yes/' /etc/skel/.bashrc && \
+   # Add call to conda init script see https://stackoverflow.com/a/58081608/4413446
+   echo 'eval "$(command conda shell.bash hook 2> /dev/null)"' >> /etc/skel/.bashrc
+
+# Create NB_USER with name jovyan user with UID=1000 and in the 'users' group
+# and make sure these dirs are writable by the `users` group.
+RUN echo "auth requisite pam_deny.so" >> /etc/pam.d/su && \
+    sed -i.bak -e 's/^%admin/#%admin/' /etc/sudoers && \
+    sed -i.bak -e 's/^%sudo/#%sudo/' /etc/sudoers && \
+    useradd -l -m -s /bin/bash -N -u "${NB_UID}" "${NB_USER}" && \
+    mkdir -p "${CONDA_DIR}" && \
+    chown "${NB_USER}:${NB_GID}" "${CONDA_DIR}" && \
+    chmod g+w /etc/passwd && \
+    fix-permissions "${HOME}" && \
+    fix-permissions "${CONDA_DIR}"
+
+USER ${NB_UID}
+
+# Pin python version here, or set it to "default"
+ARG PYTHON_VERSION=3.10
+
+# Setup work directory for backward-compatibility
+RUN mkdir "/home/${NB_USER}/work" && \
+    fix-permissions "/home/${NB_USER}"
+
+COPY --chown="${NB_UID}:${NB_GID}" initial-condarc "${CONDA_DIR}/.condarc"
+WORKDIR /tmp
+RUN set -x && \
+    arch=$(uname -m) && \
+    if [ "${arch}" = "x86_64" ]; then \
+        # Should be simpler, see <https://github.com/mamba-org/mamba/issues/1437>
+        arch="64"; \
+    fi && \
+    wget -qO /tmp/micromamba.tar.bz2 \
+        "https://micromamba.snakepit.net/api/micromamba/linux-${arch}/latest" && \
+    tar -xvjf /tmp/micromamba.tar.bz2 --strip-components=1 bin/micromamba && \
+    rm /tmp/micromamba.tar.bz2 && \
+    PYTHON_SPECIFIER="python=${PYTHON_VERSION}" && \
+    if [[ "${PYTHON_VERSION}" == "default" ]]; then PYTHON_SPECIFIER="python"; fi && \
+    # Install the packages
+    ./micromamba install \
+        --root-prefix="${CONDA_DIR}" \
+        --prefix="${CONDA_DIR}" \
+        --yes \
+        "${PYTHON_SPECIFIER}" \
+        'mamba' \
+        'jupyter_core' && \
+    rm micromamba && \
+    # Pin major.minor version of python
+    mamba list python | grep '^python ' | tr -s ' ' | cut -d ' ' -f 1,2 >> "${CONDA_DIR}/conda-meta/pinned" && \
+    mamba clean --all -f -y && \
+    fix-permissions "${CONDA_DIR}" && \
+    fix-permissions "/home/${NB_USER}"
+
+#RUN conda update --all --yes
+#RUN conda install -c conda-forge tensorflow-gpu=2.11 -y 
+
+#RUN CONDA_CUDA_OVERRIDE="11.2" mamba install --yes -c conda-forge tensorflow==2.10.0=cuda112py310*
+ENV CONDA_CUDA_OVERRIDE="11.2"  
+ENV NUM_GPUS=1
+#RUN mamba install -y tensorflow cudatoolkit>=11.2 -c conda-forge
+#==2.11.0=cuda*
+#RUN mamba install -y -c conda-forge tensorflow-gpu
+RUN CONDA_OVERRIDE_CUDA="11.2" conda install tensorflow-gpu==2.11.0 -c conda-forge
+RUN CONDA_OVERRIDE_CUDA="11.2" conda install -c conda-forge pytorch-gpu
+WORKDIR /tmp
+RUN mamba install --quiet --yes \
+    'notebook==6.4.12' \
+    'jupyterhub==2.3.1' \
+    'mathjax' \
+    'voila==0.3.7' \
+    'jupyterlab-git' \
+    'numba' \
+    'cython' \
+    'matplotlib' \
+    'pandas' \
+    'scipy' \
+    'scikit-image' \
+    'scikit-learn' \
+    'jupyterlab==3.4.3' \
+    'ipywebrtc' && \
+    jupyter notebook --generate-config && \
+    mamba clean --all -f -y && \
+  #  npm cache clean --force && \
+    jupyter lab clean && \
+    rm -rf "/home/${NB_USER}/.cache/yarn" && \
+    fix-permissions "${CONDA_DIR}" && \
+    fix-permissions "/home/${NB_USER}"
+
+ENV JUPYTER_PORT=8888
+EXPOSE $JUPYTER_PORT
+
+
+
+#RUN pip install ipywidgets voila jupyter-collaboration mathjax
+RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-sandbox-theme
+#RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-data-pool
+#RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-training
+#RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-synthetic-data
+RUN pip install --extra-index-url https://git.sandbox.iuk.hdm-stuttgart.de/api/packages/grosse/pypi/simple jupyterlab-sandbox-announcement
+RUN pip install sounddevice wavio
+RUN pip install torch==1.13.1+cu116 torchvision==0.14.1+cu116 torchaudio==0.13.1 --extra-index-url https://download.pytorch.org/whl/cu116
+RUN pip install opencv-python-headless
+# Configure container startup
+CMD ["start-notebook.sh"]
+
+# Copy local files as late as possible to avoid cache busting
+COPY start-notebook.sh start-singleuser.sh /usr/local/bin/
+# Currently need to have both jupyter_notebook_config and jupyter_server_config to support classic and lab
+COPY jupyter_server_config.py /etc/jupyter/
+
+# Fix permissions on /etc/jupyter as root
+USER root
+
+RUN echo 'export PATH=/opt/conda/bin:$PATH' >> /etc/profile
+#RUN source /etc/profile
+
+# Legacy for Jupyter Notebook Server, see: [#1205](https://github.com/jupyter/docker-stacks/issues/1205)
+RUN sed -re "s/c.ServerApp/c.NotebookApp/g" \
+    /etc/jupyter/jupyter_server_config.py > /etc/jupyter/jupyter_notebook_config.py && \
+    fix-permissions /etc/jupyter/
+
+# HEALTHCHECK documentation: https://docs.docker.com/engine/reference/builder/#healthcheck
+# This healtcheck works well for `lab`, `notebook`, `nbclassic`, `server` and `retro` jupyter commands
+# https://github.com/jupyter/docker-stacks/issues/915#issuecomment-1068528799
+HEALTHCHECK  --interval=5s --timeout=3s --start-period=5s --retries=3 \
+    CMD wget -O- --no-verbose --tries=1 --no-check-certificate \
+    http${GEN_CERT:+s}://localhost:${JUPYTER_PORT}${JUPYTERHUB_SERVICE_PREFIX:-/}api || exit 1
+
+# Switch back to jovyan to avoid accidental container runs as root
+USER ${NB_UID}
+RUN jupyter labextension disable "@jupyterlab/apputils-extension:announcements"
+#USER root
+WORKDIR "${HOME}"
\ No newline at end of file
diff --git a/fix-permissions b/fix-permissions
new file mode 100644
index 0000000..0969275
--- /dev/null
+++ b/fix-permissions
@@ -0,0 +1,35 @@
+#!/bin/bash
+# set permissions on a directory
+# after any installation, if a directory needs to be (human) user-writable,
+# run this script on it.
+# It will make everything in the directory owned by the group ${NB_GID}
+# and writable by that group.
+# Deployments that want to set a specific user id can preserve permissions
+# by adding the `--group-add users` line to `docker run`.
+
+# uses find to avoid touching files that already have the right permissions,
+# which would cause massive image explosion
+
+# right permissions are:
+# group=${NB_GID}
+# AND permissions include group rwX (directory-execute)
+# AND directories have setuid,setgid bits set
+
+set -e
+
+for d in "$@"; do
+    find "${d}" \
+        ! \( \
+            -group "${NB_GID}" \
+            -a -perm -g+rwX \
+        \) \
+        -exec chgrp "${NB_GID}" {} \; \
+        -exec chmod g+rwX {} \;
+    # setuid, setgid *on directories only*
+    find "${d}" \
+        \( \
+            -type d \
+            -a ! -perm -6000 \
+        \) \
+        -exec chmod +6000 {} \;
+done
\ No newline at end of file
diff --git a/initial-condarc b/initial-condarc
new file mode 100644
index 0000000..66ecf60
--- /dev/null
+++ b/initial-condarc
@@ -0,0 +1,6 @@
+# Conda configuration see https://conda.io/projects/conda/en/latest/configuration.html
+
+auto_update_conda: false
+show_channel_urls: true
+channels:
+  - conda-forge
\ No newline at end of file
diff --git a/jupyter_server_config.py b/jupyter_server_config.py
new file mode 100644
index 0000000..160c4b5
--- /dev/null
+++ b/jupyter_server_config.py
@@ -0,0 +1,57 @@
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+# mypy: ignore-errors
+import os
+import stat
+import subprocess
+
+from jupyter_core.paths import jupyter_data_dir
+
+c = get_config()  # noqa: F821
+c.ServerApp.ip = "0.0.0.0"
+c.ServerApp.port = 8888
+c.ServerApp.open_browser = False
+
+# https://github.com/jupyter/notebook/issues/3130
+c.FileContentsManager.delete_to_trash = False
+
+# Generate a self-signed certificate
+OPENSSL_CONFIG = """\
+[req]
+distinguished_name = req_distinguished_name
+[req_distinguished_name]
+"""
+if "GEN_CERT" in os.environ:
+    dir_name = jupyter_data_dir()
+    pem_file = os.path.join(dir_name, "notebook.pem")
+    os.makedirs(dir_name, exist_ok=True)
+
+    # Generate an openssl.cnf file to set the distinguished name
+    cnf_file = os.path.join(os.getenv("CONDA_DIR", "/usr/lib"), "ssl", "openssl.cnf")
+    if not os.path.isfile(cnf_file):
+        with open(cnf_file, "w") as fh:
+            fh.write(OPENSSL_CONFIG)
+
+    # Generate a certificate if one doesn't exist on disk
+    subprocess.check_call(
+        [
+            "openssl",
+            "req",
+            "-new",
+            "-newkey=rsa:2048",
+            "-days=365",
+            "-nodes",
+            "-x509",
+            "-subj=/C=XX/ST=XX/L=XX/O=generated/CN=generated",
+            f"-keyout={pem_file}",
+            f"-out={pem_file}",
+        ]
+    )
+    # Restrict access to the file
+    os.chmod(pem_file, stat.S_IRUSR | stat.S_IWUSR)
+    c.ServerApp.certfile = pem_file
+
+# Change default umask for all subprocesses of the notebook server if set in
+# the environment
+if "NB_UMASK" in os.environ:
+    os.umask(int(os.environ["NB_UMASK"], 8))
\ No newline at end of file
diff --git a/start-notebook.sh b/start-notebook.sh
new file mode 100644
index 0000000..cfbdffd
--- /dev/null
+++ b/start-notebook.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+set -e
+
+# The Jupyter command to launch
+# JupyterLab by default
+DOCKER_STACKS_JUPYTER_CMD="${DOCKER_STACKS_JUPYTER_CMD:=lab}"
+
+if [[ -n "${JUPYTERHUB_API_TOKEN}" ]]; then
+    echo "WARNING: using start-singleuser.sh instead of start-notebook.sh to start a server associated with JupyterHub."
+    exec /usr/local/bin/start-singleuser.sh "$@"
+fi
+
+wrapper=""
+if [[ "${RESTARTABLE}" == "yes" ]]; then
+    wrapper="run-one-constantly"
+fi
+
+# shellcheck disable=SC1091,SC2086
+exec /usr/local/bin/start.sh ${wrapper} jupyter ${DOCKER_STACKS_JUPYTER_CMD} ${NOTEBOOK_ARGS} "$@"
\ No newline at end of file
diff --git a/start-singleuser.sh b/start-singleuser.sh
new file mode 100644
index 0000000..7c49847
--- /dev/null
+++ b/start-singleuser.sh
@@ -0,0 +1,13 @@
+#!/bin/bash
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+set -e
+
+# set default ip to 0.0.0.0
+if [[ "${NOTEBOOK_ARGS} $*" != *"--ip="* ]]; then
+    NOTEBOOK_ARGS="--ip=0.0.0.0 ${NOTEBOOK_ARGS}"
+fi
+
+# shellcheck disable=SC1091,SC2086
+. /usr/local/bin/start.sh jupyterhub-singleuser ${NOTEBOOK_ARGS} "$@"
\ No newline at end of file