Fix taiga image uploads

Previously there were 2 problems with taiga image uploads
- The env variables for the domain were set incorrectly
- In the front container, the media and static folders were in the wrong
  place

Change-Id: I232c0263cf7b8ea209870fc4d1a98ecd066bc60a
Signed-off-by: Skyler Grey <minion@clicks.codes>
Reviewed-on: https://git.clicks.codes/c/Clicks/NixFiles/+/182
Reviewed-by: Samuel Shuert <coded@clicks.codes>
diff --git a/modules/common/taiga.nix b/modules/common/taiga.nix
index 0f64fb3..85fc4e3 100644
--- a/modules/common/taiga.nix
+++ b/modules/common/taiga.nix
@@ -22,8 +22,8 @@
     POSTGRES_USER = "taiga";
     POSTGRES_HOST = "172.20.0.1";
 
-    TAIGA_SCHEME = "https";
-    TAIGA_DOMAIN = "taiga.clicks.codes";
+    TAIGA_SITES_SCHEME = "https";
+    TAIGA_SITES_DOMAIN = "taiga.clicks.codes";
     TAIGA_SUBPATH = "";
 
     EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend";
@@ -43,9 +43,12 @@
     # TODO: OPENID_CLIENT_SECRET
   ];
 
+  host_static_folder = "/var/taiga/back/static";
+  host_media_folder = "/var/taiga/back/media";
+
   backend_volumes = [
-    "/var/taiga/back/static:/taiga-back/static"
-    "/var/taiga/back/media:/taiga-back/media"
+    "${host_static_folder}:/taiga-back/static"
+    "${host_media_folder}:/taiga-back/media"
   ];
 
   taiga_version = "latest";
@@ -162,7 +165,9 @@
       ports = [ "127.0.0.255:1029:80/tcp" ];
       volumes = [
         "${./taiga/taiga-gateway.conf}:/etc/nginx/conf.d/default.conf"
-      ] ++ backend_volumes;
+        "${host_static_folder}:/taiga/static"
+        "${host_media_folder}:/taiga/media"
+      ];
       extraOptions = [ "--network=taiga" ];
     };
   };