Create Modules.md

Development/Go/Modules.md

@@ -0,0 +1,37 @@
+# [Modules](https://github.com/golang/go/wiki/Modules)
+
+First time:
+
+```
+go mod init
+```
+
+Daily workflow:
+
+```
+# Update modules
+go get -u ./...
+
+# Install module with chosen commit or branch
+go get public.git.com/module@branch
+
+# Prune no longer used modules
+go mod tidy
+
+# Copy modules to local vendor directory
+go mod vendor
+```
+
+In world of corporation, we work with private repository, add to `~/.bashrc`, `~/.zshrc`:
+
+```sh
+export GOPRIVATE=private.git.com
+```
+
+Last hope, use `~/.netrc`:
+
+```txt
+machine private.git.com
+login your_user
+password your_password 
+```