You can run Docker containers inside a Docker container. To allow this, you have to pass the docker socks into the container using the option -v /var/run/docker.sock:/var/run/docker.sock. For more discussions, please refer to How To Run Docker in Docker Container [3 Easy Methods …

Tips and Traps

1. You can download a Windows 10 Virtual Machine at Get a Windows 10 development environment !

2. winget is the official Windows Package Manager CLI and Chocolatey is a cool community-driven software management tool for Windows.

3. When a file is being synchronized by Dropbox, it might be unaccessible temporarily …

Update: As of MacOS Sierra 10.12.1, the remapping of Caps Lock to Escape can be done natively in the Keyboard System Preferences pane. Follow the steps below to remap Caps Lock to Escape (without relying on 3rd party software).

1. Open System Preferences and click on Keyboard
2. Click on …

** Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement! **

If you are a heavy Vim user and you have work on Windows, it is suggested that you Swap the Caps Lock key with the Escape key. The swaped key mapping …

Suppose you have virtual hard disk in VirtualBox called xp.vdi, you can resize it (megabytes) using the following command.

VBoxManage modifyhd xp.vdi --resize 40960

The command currently doesn't support vmdk virtual disk. So if you have a virtual disk called xp.vmdk, you have to first convert it …

You can build a portable Python environment following steps below.

1. Install python-build-standalone.

2. Install Python packages using pip of the installed python-build-standalone distribution.

3. Pack the whole python-build-standalone directory into a compressed file, e.g., env.tar.gz.

The GitHub repo dclong/python-portable has good examples of building portable Python environments leveraging …