This can be handy to have a variable default to another variable's values.
Hit the subscribe button to receive more videos like this!
REFERENCE LINKS
---------------------------------------------------
► https://nickjanetakis.com/blog/docker...
► https://github.com/nickjj/docker-flas...
COURSES
---------------------------------------------------
Courses I've created that focus on web dev and deployment topics.
► https://nickjanetakis.com/courses/
THE TOOLS I USE / GEAR
---------------------------------------------------
► https://nickjanetakis.com/blog/the-to...
FOLLOW ME ELSEWHERE
---------------------------------------------------
► Twitter: / nickjanetakis
► GitHub: https://github.com/nickjj
TIMESTAMPS
---------------------------------------------------
0:00 -- Intro
0:19 -- How nested variable interpolation looks
1:55 -- Confirming it still works
2:13 -- Change the PORT env variable to something else
3:00 -- Just a reminder, EXPOSE is mainly for documentation