feat: get updated lists during build step

Signed-off-by: Mike Fiedler <miketheman@gmail.com>

Dockerfile

@@ -234,6 +234,8 @@ COPY --from=static /opt/warehouse/src/warehouse/admin/static/dist/ /opt/warehous
 COPY --from=build /opt/warehouse/ /opt/warehouse/
 COPY . /opt/warehouse/src/
 
+# Pre-cache tlb list
+RUN tldextract --update
 # Load our module to pre-compile as much bytecode as we can easily.
 # Saves time collectively on container boot!
 RUN python -m warehouse

warehouse/accounts/forms.py

@@ -286,7 +286,7 @@ def validate_email(self, field):
             )
 
         # Check if the domain is valid
-        extractor = TLDExtract(suffix_list_urls=())  # Use embedded snapshot list
+        extractor = TLDExtract()  # List is updated during image build
         domain = extractor(address.domain.lower()).registered_domain
 
         if (