fix docker-compose.yml

docker-compose.yml

@@ -34,7 +34,7 @@ services:
     environment:
       CANTALOUPE_ENDPOINT_ADMIN_SECRET: "secret"
       CANTALOUPE_ENDPOINT_ADMIN_ENABLED: "true"
-      CANTALOUPE_STATIC_SOURCE: "S3Source"
+      CANTALOUPE_SOURCE_STATIC: "S3Source"
       CANTALOUPE_S3SOURCE_LOOKUP_STRATEGY: "BasicLookupStrategy"
       CANTALOUPE_S3SOURCE_SECRET_KEY: ${AWS_SECRET_ACCESS_KEY}
       CANTALOUPE_S3SOURCE_ACCESS_KEY_ID: ${AWS_ACCESS_KEY_ID}