MCLOUD-7120: Add command which validate .magento.env.yaml locally before push

src/cloud/project/magento-env-yaml.md

@@ -112,3 +112,20 @@ stage:
   deploy:
     CLEAN_STATIC_FILES: false
 ```
+
+## Validate configuration file
+
+Use the following CLI command to validate the `.magento.env.yaml` configuration file before pushing changes to the remote Cloud environment.
+
+```bash
+php ./vendor/bin/ece-tools cloud:config:validate
+```
+
+The following sample response provides a list of items to correct:
+
+```terminal
+Environment configuration is not valid. Correct the following items in your .magento.env.yaml file:
+The SCD_THREADS variable contains an invalid value of type string. Use the following type: integer.
+The SCD_STRATEGY variable contains an invalid value fast. Use one of the available value options: compact, quick, standard.
+The NOT_EXIST_OPTION variable is not allowed in configuration.
+```