From bf114ecd51406dfaa9b2f8f8838357411d037dff Mon Sep 17 00:00:00 2001
From: Felix Bartels <1257835+fbartels@users.noreply.github.com>
Date: Wed, 9 Oct 2019 16:49:36 +0200
Subject: [PATCH] Create CONTRIBUTING.md

---
 CONTRIBUTING.md | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 CONTRIBUTING.md

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..73afbc7
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,9 @@
+# Contributing
+
+When contributing to this repository, please first discuss the change you wish to make via issue,
+email, or any other method with the owners of this repository before making a change. 
+
+Please see https://github.com/zokradonh/kopano-docker/blob/master/README.md#when-building-my-own-containers-how-can-i-make-sure-my-build-works-as-expected for testing remakrs
+
+Speeding up testing rebuilds:
+- `make vcs_ref=invalid build-web`