diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
new file mode 100644
index 0000000..d902845
--- /dev/null
+++ b/.devcontainer/Dockerfile
@@ -0,0 +1,37 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.134.0/containers/python-3/.devcontainer/base.Dockerfile
+
+# [Choice] Python version: 3, 3.10, ...
+ARG VARIANT=3
+FROM mcr.microsoft.com/vscode/devcontainers/python:${VARIANT}
+
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    # Remove imagemagick due to https://security-tracker.debian.org/tracker/CVE-2019-10131
+    && apt-get purge -y imagemagick imagemagick-6-common \
+    # Install common packages, non-root user
+    # && /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" \
+    # Clean up
+    && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts
+
+# [Option] Install Node.js
+# ARG INSTALL_NODE="false"
+# ARG NODE_VERSION="lts/*"
+# RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "source /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+
+# [Optional] Allow the vscode user to pip install globally w/o sudo
+# ENV PIP_TARGET=/usr/local/pip-global
+# ENV PYTHONPATH=${PIP_TARGET}:${PYTHONPATH}
+# ENV PATH=${PIP_TARGET}/bin:${PATH}
+# RUN mkdir -p ${PIP_TARGET} \
+#     && chown vscode:root ${PIP_TARGET} \
+#     && echo "if [ \"\$(stat -c '%U' ${PIP_TARGET})\" != \"vscode\" ]; then chown -R vscode:root ${PIP_TARGET}; fi" \
+#         | tee -a /root/.bashrc /home/vscode/.bashrc /root/.zshrc >> /home/vscode/.zshrc
+
+# [Optional] If your pip requirements rarely change, uncomment this section to add them to the image.
+# COPY requirements.txt /tmp/pip-tmp/
+# RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+#    && rm -rf /tmp/pip-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update \
+#     && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..ef364a3
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1,22 @@
+// Docu: https://containers.dev/implementors/json_reference/
+{
+    "name": "Python 3",
+    "build": {
+        "dockerfile": "Dockerfile",
+        "context": "..",
+        //Update 'VARIANT' to pick a Python version: 3, 3.10, ...
+        "args": {
+            "VARIANT": "3.10"
+        }
+    },
+    // Add the IDs of extensions you want installed when the container is created.
+    "extensions": [
+        "ms-python.python"
+    ],
+    // Use 'postCreateCommand' to run commands after the container is created.
+    "postCreateCommand":
+        "python -m pip install --upgrade pip; pip install -r requirements-dev.txt; pip install -r requirements.txt",
+    "postStartCommand": "echo 'Happy coding'"
+    // Comment out to connect as root instead.
+    // "remoteUser": "vscode"
+}
diff --git a/.gitignore b/.gitignore
index 8fa074b..c7b37bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,12 +1,15 @@
-generated_python/__pycache__/
+__pycache__/
 qr/
 venv/
 
-*.csv
-*.json
+/*.csv
+/*.json
 !devbox.json
 !example_output.json
 !example_output.csv
 !.github/
 !.flake8
+.vscode
 !.vscode/settings.json
+!.devcontainer/
+!.devcontainer/*.json
diff --git a/README.md b/README.md
index aeac0bd..8b404e5 100644
--- a/README.md
+++ b/README.md
@@ -64,13 +64,26 @@ pipenv shell
 python extract_otp_secret_keys.py example_export.txt
 ```
 
+### Visual Studio Code Remote - Containers / VSCode devcontainer
+
+You can you use [VSCode devcontainer](https://code.visualstudio.com/docs/remote/containers-tutorial) for running extract_otp_secret_keys.
+
+Requirement: Docker
+
+1. Start VSCode
+2. Open extract_otp_secret_keys.code-workspace
+3. Open VSCode command palette (Ctrl-Shift-P)
+4. Type command "Remote-Containers: Reopen in Container"
+5. Open integrated bash terminal in VSCode
+6. Execute: python extract_otp_secret_keys.py example_export.txt
+
 ### venv
 
 Alternatively, you can use a python virtual env for the dependencies:
 
     python -m venv venv
     . venv/bin/activate
-    pip install -r requirements-buildenv.txt
+    pip install -r requirements-dev.txt
     pip install -r requirements.txt
 
 The requirements\*.txt files contain all the dependencies (also the optional ones).
diff --git a/extract_otp_secret_keys.code-workspace b/extract_otp_secret_keys.code-workspace
new file mode 100644
index 0000000..362d7c2
--- /dev/null
+++ b/extract_otp_secret_keys.code-workspace
@@ -0,0 +1,7 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+	]
+}
\ No newline at end of file
diff --git a/requirements-buildenv.txt b/requirements-buildenv.txt
deleted file mode 100644
index 2309722..0000000
--- a/requirements-buildenv.txt
+++ /dev/null
@@ -1 +0,0 @@
-wheel
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000..8202127
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,4 @@
+wheel
+pytest
+flake8
+pylint