From 53cc538e20fcac9454f9ec61082161933d1de867 Mon Sep 17 00:00:00 2001
From: Veikka Kähkönen <insiding@gmail.com>
Date: Tue, 17 Oct 2017 21:17:13 +0300
Subject: Document the COMMIT_HASH environment variable / Docker argument

---
 docker-compose.yml | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'docker-compose.yml')

diff --git a/docker-compose.yml b/docker-compose.yml
index b845967..eee38c5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,6 +5,10 @@ services:
             context: "."
             dockerfile: "jekyll.docker"
             args:
+                # Set this environment variable to the value of the latest
+                # Git commit hash to rebuild only the relevant parts of the
+                # Jekyll image.
+                # E.g. COMMIT_HASH=hash_here docker-compose up --build
                 - COMMIT_HASH=${COMMIT_HASH}
         volumes_from:
             - nginx
-- 
cgit v1.3