feat: add .env.sample file and an explanation to README.

gdethier · gdethier · commit 44fab52af7ac · 2021-10-13T13:45:30.000+02:00
diff --git a/.env.sample b/.env.sample
@@ -0,0 +1,3 @@
+NODE_TAG=latest
+BACKEND_TAG=latest
+FRONTEND_TAG=latest
diff --git a/README.md b/README.md
@@ -23,6 +23,9 @@ account switcher (upper right corner of the window) in order to:
 - switch to another account
 - log out.
 
+Note that, by default, logion's Docker images with `latest` tag are being used. In order to select other tags, you
+can save `.env.sample` file as `.env` and modify `.env`'s content to suite your needs.
+
 ## Use cases
 
 This section describes the "script" to run when testing a given use case.
