[docs] Add Julia to 'Languages and frameworks' section and improve Py…

…thon

src/docs/python_in_gitpod.md

@@ -1,3 +1,55 @@
 # Python
 
-> 🚧 Please help improve this guide by [editing it](https://gitpod.io/#https://github.com/gitpod-io/website/blob/master/src/docs/python_in_gitpod.md).
+
+Gitpod comes with great support for Python builtin. Still, depending on your particular project, you might want to further optimize the experience.
+
+## GUI Applications with wxPython
+Have a super cool GUI application you are building with wxPython? Want to run it in Gitpod? Please take a look at [JesterOrNot/Gitpod-PythonGUI-Example](https://github.com/JesterOrNot/Gitpod-PythonGUI-Example)
+
+Here is an example `.gitpod.Dockerfile`:
+```dockerfile
+FROM gitpod/workspace-full-vnc:latest
+
+USER root
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+# Install wxPython Dependencies
+RUN apt-get -q update \
+    && apt-get install -yq \
+        freeglut3-dev \
+        python3.7-dev \
+        libpython3.7-dev \
+        libgl1-mesa-dev \
+        libglu1-mesa-dev \
+        libgstreamer-plugins-base1.0-dev \
+        libgtk-3-dev \
+        libnotify-dev \
+        libsdl2-dev \
+        libwebkit2gtk-4.0-dev \
+        libxtst-dev \
+        libgtk2.0-dev \
+    && sudo rm -rf /var/lib/apt/lists/*
+
+# Add wxPython itself
+
+USER gitpod
+
+RUN pip3 install -U -f https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-18.04/ wxPython
+```
+Here is an example `.gitpod.yml`:
+```yaml
+image:
+  file: .gitpod.Dockerfile
+
+ports:
+  - port: 6080
+    onOpen: open-preview
+  - port: 5900
+    onOpen: ignore
+  - port: 35900
+    onOpen: ignore
+
+tasks:
+  - command: python3 app.py
+```