Add an alternative solution on MacOS

For #2937.
ChangeLog:

	* README.md (gccrs-workspace]): like-wise.

diff --git a/README.md b/README.md
index 31df8df5138aefd2b9d6249974eb0b726f16b3d2..502b61f0ab1ec94e75180f2109a71ef93e279dae 100644 (file)
--- a/README.md
+++ b/README.md
@@ -75,6 +75,12 @@ $ make
 
 ```
 
+Alternatively, a docker environment is avaiable for ARM-based Mac contributors.
+
+Please visit [gccrs-workspace](https://github.com/badumbatish/gccrs-workspace). 
+ 
+The image is based on Ubuntu ARM and came with dependencies all fetched.
+
 #### Running GCC Rust
 
 Running the compiler itself without make install we can simply invoke the compiler proper: