Merge pull request #1757 from infosiftr/julia-tiers

Add a dedicated "Julia Support Tiers" callout, explicitly noting Alpine/musl

julia/content.md

@@ -6,6 +6,12 @@ Julia is a high-level, high-performance dynamic programming language for technic
 
 %%LOGO%%
 
+# Support Tiers
+
+Platforms supported by Julia are divided into a tier system that ranks them based on level of support. For more dedicated information about support tiers, please see ["Currently supported platforms" on the Julia download page](https://julialang.org/downloads/#currently_supported_platforms).
+
+It's especially relevant to note that Alpine / musl is "Tier 3" due to several known issues (see [docker-library/julia#47 (comment)](https://github.com/docker-library/julia/pull/47#issuecomment-652661869), [JuliaLang/julia#28805](https://github.com/JuliaLang/julia/issues/28805), [JuliaLang/julia#36458](https://github.com/JuliaLang/julia/issues/36458)).
+
 # How to use this image
 
 ## Start Julia REPL