feat: allow passing corine secret via envvar

Author: lkstrp

doc/configtables/toplevel.csv

@@ -8,4 +8,4 @@ remote,,,
 -- ssh,--,,Optionally specify the SSH of a remote cluster to be synchronized.
 -- path,--,,Optionally specify the file path within the remote cluster to be synchronized.
 secrets,,,
--- corine,--,,API token for corine dataset retrieval. See `scripts/retrieve_corine_dataset_primary.py` for more instructions.
+-- corine,--,,API token for corine dataset retrieval. You can also pass the token by setting the environment variable "CORINE_API_TOKEN". See `scripts/retrieve_corine_dataset_primary.py` for more instructions.

rules/retrieve.smk

@@ -96,7 +96,7 @@ elif (CORINE_DATASET := dataset_version("corine"))["source"] in ["primary"]:
 
     rule retrieve_corine:
         params:
-            apikey=config["secrets"]["corine"],
+            apikey=os.environ.get("CORINE_API_TOKEN", config["secrets"]["corine"]),
         output:
             zip=f"{CORINE_DATASET['folder']}/corine.zip",
             tif_file=f"{CORINE_DATASET['folder']}/corine.tif",