chore(global): 👷 improve 404 page and Gitpod config, plus some VSC ws config changes

Also in this commit, we also apply changes needed for
the use of social cards in the theme we do use.

Signed-off-by: Andrei Jiroh Halili <ajhalili2006@gmail.com>

.gitpod.yml

@@ -4,12 +4,22 @@
 
 # Learn more from ready-to-use templates: https://www.gitpod.io/docs/introduction/getting-started/quickstart
 
+checkoutLocation: tildeweb-ajhalili2006
+
+image:
+  file: .gitpod.Dockerfile
+
 tasks:
   - init: |
       python3 -m venv .venv
       source .venv/bin/activate
       pip3 install -r requirements.txt
-    command: mkdocs serve
+    command: |
+      # since it might not be carried on venv shell, we did this instead
+      FF_ENABLE_COMMIT_DATA=true mkdocs serve
+    name: site-localdev
+    env:
+      FF_ENABLE_COMMIT_DATA: "true" # Required to use git-revision-date-localized, like in prod.
 
 ports:
   - port: 8000