Update README.md

indigo-dc · Jul 20, 2020 · 572a324 · 572a324
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diff --git a/README.md b/README.md
@@ -19,6 +19,12 @@ ports: as from the docker syntax: 8080 or 8080:80, default "80", mandatory
 command: command to be executed, can be left blank
 ```
 
+Environment variables
+--------------
+```
+env_file: path to file containig a list of environment variables on the form FOO=BAR
+```
+
 
 
 Dependencies