Ubuntu - Install Typescript
For now I just know of the one main way to install Typescript, but as and when I find out more ways, such as a PPA, I'll post them here.
Ubuntu 16.04 and 18.04 - Native Packages
sudo apt update && sudo apt install node-typescript -y
RUN npm install -g typescript
If you need to install a specific version, you can do something like:
RUN npm install -g firstname.lastname@example.org