Couchbase Installation Fails on Ubuntu 20.04 with error: Python3 not Found

Hi,

We have a development environment where the users could try out the getting started guides on Developer Portal using gitpod. 

I was trying to test the SDK 4.0 changes on the gitpod environment and ran into an issue while installing Couchbase SDK 4.0.x. The installation process complains about not finding python3. The interesting part is that the CMake arguments seem to detect the python version (-DPYTHON_EXECUTABLE=/usr/bin/python3).

The SDK versions prior to 4 work. All the dependencies seem to be installed as well.
Environment info:

gitpod@couchbaseex-pythonquick-kbfrw2je034:/workspace/python-quickstart/src$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.4 LTS
Release: 20.04
Codename: focal
 
gitpod@couchbaseex-pythonquick-kbfrw2je034:/workspace/python-quickstart/src$ which python3
/usr/bin/python3
 
gitpod@couchbaseex-pythonquick-kbfrw2je034:/workspace/python-quickstart/src$ sudo apt-get install git python3-dev python3-pip python3-setuptools cmake build-essential libssl-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
cmake is already the newest version (3.16.3-1ubuntu1).
python3-dev is already the newest version (3.8.2-0ubuntu2).
python3-setuptools is already the newest version (45.2.0-1).
build-essential is already the newest version (12.8ubuntu1.1).
git is already the newest version (1:2.25.1-1ubuntu3.4).
libssl-dev is already the newest version (1.1.1f-1ubuntu2.13).
python3-pip is already the newest version (20.0.2-5ubuntu1.6).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

 
Installation logs are attached here
 
If you want to test the platform, you can try this link that contains all the environment setup
https://gitpod.io/#https://github.com/couchbase-examples/python-quickstart/pull/21