Migrate phpunit tests from drone to github actions (Fixes: #1679)

Only test with sqlite and oc for now. There's no added value to run our
basic phpunit test on mysql and postgresql environments.

Also drops the obsolete `occ app:check-code` compatibility tests.

Signed-off-by: Jonas <jonas@freesources.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 635b13e4b..6149da14f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Nextcloud Text
 
-[![Drone (self-hosted) with branch](https://img.shields.io/drone/build/nextcloud/text/master?server=https%3A%2F%2Fdrone.nextcloud.com)](https://drone.nextcloud.com/nextcloud/text) 
+![GitHub Workflow Status](https://img.shields.io/github/workflow/status/nextcloud/text/Node)
 [![Start contributing](https://img.shields.io/github/issues/nextcloud/text/good%20first%20issue?color=7057ff&label=Contribute)](https://github.com/nextcloud/text/issues?q=is%3Aissue+is%3Aopen+sort%3Aupdated-desc+label%3A%22good+first+issue%22)