CI locked to composer version 1 until support for composer 2 added.

kidunot89 · web-flow · commit 04486871682d · 2020-12-15T13:40:37.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -61,6 +61,8 @@ before_install:
   - docker-compose pull wordpress
   - nvm install
   - nvm use
+  # Lock to Composer version 1 for now.
+  - composer self-update --1
 
 install:
   - npm install
