diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index 3951b60..ac02c23 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -6,7 +6,7 @@ on:
 
 jobs:
   check:
-    name: Check Nix flake
+    name: Check, build and cache Nix flake
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
@@ -27,10 +27,14 @@ jobs:
           nix run .#nixpkgs.mine.x86_64-linux.attic-client -- \
             login --set-default colony https://nix-cache.nul.ie "${{ secrets.NIX_CACHE_TOKEN }}"
 
-      # - name: Check flake
-      #   run: nix flake check
+      - name: Check and build flake
+        id: build
+        run: |
+          nix flake check
+
+          path=$(nix build --no-link .#ci.x86_64-linux --json | jq -r .[0].outputs.out)
+          echo "path=$path" >> "$GITHUB_OUTPUT"
       - name: Push to cache
         run: |
-          path=$(nix build --no-link .#nixosConfigurations.middleman.config.system.build.toplevel --json | jq -r .[0].outputs.out)
           nix run .#nixpkgs.mine.x86_64-linux.attic-client -- \
-            push main $path
+            push main ${{ steps.build.outputs.path }}
diff --git a/flake.nix b/flake.nix
index c7bdac1..84c03b5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -51,8 +51,8 @@
       ...
     }:
     let
-      inherit (builtins) mapAttrs;
-      inherit (lib) genAttrs recurseIntoAttrs evalModules;
+      inherit (builtins) mapAttrs replaceStrings;
+      inherit (lib) mapAttrs' filterAttrs nameValuePair recurseIntoAttrs evalModules;
       inherit (lib.flake) flattenTree eachDefaultSystem;
       inherit (lib.my) mkDefaultSystemsPkgs flakePackageOverlay;
 
@@ -164,16 +164,34 @@
       pkgs = pkgs'.mine.${system};
       lib = pkgs.lib;
 
+      filterSystem = filterAttrs (_: c: c.config.nixpkgs.system == system);
+      homes' =
+        mapAttrs
+          (_: h: h.activationPackage)
+          (filterSystem self.homeConfigurations);
+      systems' =
+        mapAttrs
+          (_: h: h.config.system.build.toplevel)
+          (filterSystem self.nixosConfigurations);
       shell = pkgs.devshell.mkShell ./devshell;
     in
     # Stuff for each platform
     {
       checks = flattenTree {
-        homeConfigurations = recurseIntoAttrs (mapAttrs (_: h: h.activationPackage)
-          (lib.filterAttrs (_: h: h.config.nixpkgs.system == system) self.homeConfigurations));
+        homeConfigurations = recurseIntoAttrs homes';
         deploy = recurseIntoAttrs (pkgs.deploy-rs.lib.deployChecks self.deploy);
       };
 
+      ci =
+      let
+        homes =
+          mapAttrs'
+            (n: v: nameValuePair ''home-${replaceStrings ["@"] ["-at-"] n}'' v)
+            homes';
+        systems = mapAttrs' (n: v: nameValuePair "system-${n}" v) systems';
+      in
+        pkgs.linkFarm "ci" (homes // systems);
+
       packages = flattenTree (import ./pkgs { inherit lib pkgs; });
 
       devShells.default = shell;
diff --git a/nixos/boxes/colony/vms/shill/containers/middleman/vhosts.nix b/nixos/boxes/colony/vms/shill/containers/middleman/vhosts.nix
index 24d098a..c45a2a3 100644
--- a/nixos/boxes/colony/vms/shill/containers/middleman/vhosts.nix
+++ b/nixos/boxes/colony/vms/shill/containers/middleman/vhosts.nix
@@ -412,7 +412,6 @@ in
 
       nixCacheableRegex = ''^\/(\S+\.narinfo|nar\/\S+\.nar\.\S+)$'';
       nixCacheHeaders = ''
-        proxy_hide_header "X-Amz-Request-Id";
         add_header Cache-Control $nix_cache_control;
         add_header Expires $nix_expires;
       '';
@@ -448,7 +447,6 @@ in
           };
         };
         useACMEHost = pubDomain;
-        onlySSL = false;
       };
     };
 
diff --git a/nixos/boxes/colony/vms/shill/containers/object.nix b/nixos/boxes/colony/vms/shill/containers/object.nix
index a08e277..887bfe2 100644
--- a/nixos/boxes/colony/vms/shill/containers/object.nix
+++ b/nixos/boxes/colony/vms/shill/containers/object.nix
@@ -162,7 +162,7 @@ in
                   type = "s3";
                   region = "eu-central-1";
                   bucket = "nix-attic";
-                  endpoint = "http://localhost:9000";
+                  endpoint = "https://s3.nul.ie";
                 };
                 chunking = {
                   nar-size-threshold = 65536;