docs: add page on INITIAL_DATA_DIRECTORY

docs/_data/docs-menu.yml

@@ -40,3 +40,5 @@
       link: /runbook/
     - name: Prometheus metrics
       link: /metrics/
+    - name: Caching Data Files
+      link: /cache-data-files/

docs/cache-data-files.md

@@ -0,0 +1,42 @@
+---
+layout: page
+title: Caching Data Files
+hide_hero: true
+show_sidebar: false
+menubar: docs-menu
+---
+
+# Caching Data Files
+
+Watchman supports sourcing data files from the local filesystem and falling back to the remote servers when local files do not exist. This is helpful for flakey servers or when operating a large number of Watchman instances.
+
+By setting `INITIAL_DATA_DIRECTORY` to a local directory Watchman will look for the following files.
+
+**OFAC**
+
+- `add.csv` - Address
+- `alt.csv` - Alternate ID
+- `sdn.csv` - Specially Designated National
+- `sdn_comments.csv` - Specially Designated National Comments
+
+Download the files from [Data Center - SDN List](https://sanctionslist.ofac.treas.gov/Home/SdnList)
+
+**US Consolidated Screening List**
+
+- `csl.csv` - US Consolidated Screening List
+- `dpl.txt` - US Denied Persons List
+
+Download the [US Consolidated Screening List](https://www.trade.gov/consolidated-screening-list)
+
+**EU Consolidated Screening List**
+
+- `eu_csl.csv` - EU Consolidated Screening List
+
+Download the [EU Consolidated Screening List](https://data.europa.eu/data/datasets/consolidated-list-of-persons-groups-and-entities-subject-to-eu-financial-sanctions?locale=en)
+
+**UK Consolidated Screening List**
+
+- `ConList.csv` - UK Consolidated Screening List
+- `UK_Sanctions_List.ods` - UK Sanctions List
+
+Download the [UK Consolidated Screening List](https://www.gov.uk/government/publications/financial-sanctions-consolidated-list-of-targets/consolidated-list-of-targets#contents) and the [UK Sanctions List](https://www.gov.uk/government/publications/the-uk-sanctions-list)