Document how to use earthly to run CI tests locally

mihaibudiu · mihaibudiu · commit 2bf90afe000b · 2024-09-27T01:23:53.000Z
Signed-off-by: Mihai Budiu &lt;mbudiu@feldera.com&gt;
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -150,6 +150,21 @@ When opening a new issue, try to roughly follow the commit message format conven
 
 # For developers
 
+## Running CI tests locally
+
+This can be done using `earthly`.  The `Earthfile` in the root
+directory has sections for tests.  You can run tests from one section
+using a command like:
+
+`earthly -P --ci +section`
+
+You can find the list of sections using `earthly ls`.
+
+For example, to run tests from the `test-python` section, the command
+would look like:
+
+`earthly -P --ci +test-python`
+
 ## Building Feldera from sources
 
 Feldera is implemented in Rust and uses Rust's `cargo` build system. The SQL
