Revert "Go back to the latest stable version of Sia as default for the docker-compose file."

This reverts commit 42e3df128a.

docker-compose.yml

@@ -19,7 +19,7 @@ services:
       context: ./docker/sia
       dockerfile: Dockerfile
       args:
-        branch: v1.5.5
+        branch: portal-latest
     container_name: sia
     restart: unless-stopped
     logging: *default-logging
@@ -82,16 +82,17 @@ services:
       - sia
       - health-check
       - handshake-api
+      - website
 
-  webapp:
+  website:
     build:
-      context: ./packages/webapp
+      context: ./packages/website
       dockerfile: Dockerfile
-    container_name: webapp
+    container_name: website
     restart: unless-stopped
     logging: *default-logging
-    volumes:
-      - ./docker/data/webapp/.cache:/usr/app/.cache
+    env_file:
+      - .env
     networks:
       shared:
         ipv4_address: 10.10.10.35