Hello,
about a few weeks ago, in my company they've offered me the position as DevOps Jr (Actually i'm a senior dev).
Being honest, i'm a little ...
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I would take off Docker Swarm (didn't they kill it?) and definitely add a scripting language. Python is very popular, but personally Ruby is my favorite. I've also been learning Chef on top of Ruby; it has a learning curve but it is totally doable and they have a free interactive tutorial section.
Terraform and Ansible should be on your list I think. Infrastructure as code and pipeline as code approaches are getting so popular.
roadmap.sh/devops
Please read and follow if you can learn at the first level to here, is what I personally advise to all beginners.