This one misplaced character can cause tricky to debug error messages.
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REFERENCE LINKS
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► https://nickjanetakis.com/blog/beware...
► https://github.com/hadolint/hadolint/...
COURSES
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Courses I've created that focus on web dev and deployment topics.
► https://nickjanetakis.com/courses/
THE TOOLS I USE / GEAR
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► https://nickjanetakis.com/blog/the-to...
FOLLOW ME ELSEWHERE
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► Twitter: / nickjanetakis
► GitHub: https://github.com/nickjj
TIMESTAMPS
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0:00 -- Intro
0:11 -- Someone had this issue on IRC
0:46 -- Demoing the first error and going over the Dockerfile
2:09 -- Was test a reserved keyword? Nope
2:38 -- Reducing variables to help find the root cause
4:01 -- Identifying the root cause
5:03 -- This was an interesting issue
5:40 -- Maybe Hadolint could detect this in the future
6:34 -- Can it be a lint rule? I opened an issue on GitHub