fix(docker_context): ignore the "default" context (#3803) (#3804)

Co-authored-by: Thomas Kintscher <thomas@flowciety.de>

src/modules/docker_context.rs

@@ -57,6 +57,10 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
         }
     };
 
+    if ctx == "default" {
+        return None;
+    }
+
     let parsed = StringFormatter::new(config.format).and_then(|formatter| {
         formatter
             .map_meta(|variable, _| match variable {
@@ -307,6 +311,24 @@ mod tests {
         cfg_dir.close()
     }
 
+    #[test]
+    fn test_docker_context_default() -> io::Result<()> {
+        let cfg_dir = tempfile::tempdir()?;
+
+        let actual = ModuleRenderer::new("docker_context")
+            .env("DOCKER_CONTEXT", "default")
+            .config(toml::toml! {
+                [docker_context]
+                only_with_files = false
+            })
+            .collect();
+        let expected = None;
+
+        assert_eq!(expected, actual);
+
+        cfg_dir.close()
+    }
+
     #[test]
     fn test_docker_context_overrides_config() -> io::Result<()> {
         let cfg_dir = tempfile::tempdir()?;