added table with additional information for environment variables

README.md

@@ -2,31 +2,19 @@
 The harbor day2 operator is for automated management of existing harbor instances using python harbor-api
 
 ## Environment Variables
-The following environment variables are required:
+The following environment variables are expected:
+
+|Environment Variable|Required|Example Value|Explanation|
+|-------|-------|--------|-------|
+|`ADMIN_USERNAME`|required (defaults to `admin` if not given)|admin|Username of the administrator account used to login via API. The default is `admin`.|
+|`ADMIN_PASSWORD_OLD`|not required|***|The administrator password used previously. If the harbor administrator account password has not yet been updated, both `ADMIN_PASSWORD_OLD` and `ADMIN_PASSWORD_NEW` are required and used to update the admin account password to the `ADMIN_PASSWORD_NEW`.|
+|`ADMIN_PASSWORD_NEW`|required|***|The new administrator password. If the harbor administrator account password has already been updated to the `ADMIN_PASSWORD_NEW` nothing changes.|
+|`HARBOR_API_URL`|required|https://harbor.domain.com/api/v2.0/|The full Harbor API URL.|
+|`CONFIG_FOLDER_PATH`|required|/usr/local/scripts|The path to the folder containing all configuration files. The files are defined and documented in the harbor repository. The path depends on how the `harbor-day2-operator` is deployed.|
+|`ROBOT_NAME_PREFIX`|not required|robot$|The prefix used in all robot names.|
+|`OIDC_STATIC_CLIENT_TOKEN`|required|***|The OIDC provider secret.|
+|`OIDC_ENDPOINT`|required|https://oidc.domain.com/api|The endpoint of the OIDC provider.|
 
-`ADMIN_USERNAME`  
-Username of the administrator account used to login via API. The default is `admin`.
-
-`ADMIN_PASSWORD_OLD`  
-The administrator password used previously. If the harbor administrator account password has not yet been updated, both `ADMIN_PASSWORD_OLD` and `ADMIN_PASSWORD_NEW` are required and used to update the admin account password to the `ADMIN_PASSWORD_NEW`.
-
-`ADMIN_PASSWORD_NEW`  
-The new administrator password. If the harbor administrator account password has already been updated to the `ADMIN_PASSWORD_NEW` nothing changes.
-
-`HARBOR_API_URL`  
-The full Harbor API URL.
-
-`CONFIG_FOLDER_PATH`
-The path to the folder containing all configuration files. The files are defined and documented in the harbor repository.
-
-`ROBOT_NAME_PREFIX`  
-The prefix used in all robot names.
-
-`OIDC_STATIC_CLIENT_TOKEN`  
-The OIDC provider secret.
-
-`OIDC_ENDPOINT`  
-The endpoint of the OIDC provider.
 
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