diff --git a/hydro.nix b/hydro.nix
deleted file mode 100644
index 90bd0f8e..00000000
--- a/hydro.nix
+++ /dev/null
@@ -1,29 +0,0 @@
-{ pkgs ? import <nixpkgs> { system = "x86_64-linux"; } }:
-
-pkgs.dockerTools.buildImage {
-  name = "hydrooj/web";
-  tag = "latest";
-
-  contents = [
-    pkgs.mongodb-4_2
-    pkgs.minio
-    pkgs.nodejs
-    pkgs.yarn
-  ];
-  runAsRoot = ''
-    #!${pkgs.runtimeShell}
-    mkdir -p /data/db
-    yarn global add pm2 hydrooj @hydrooj/ui-default @hydrooj/hydrojudge
-    hydrooj addon add @hydrooj/hydrojudge
-    hydrooj addon add @hydrooj/ui-default
-  '';
-
-  config = {
-    WorkingDir = "/data";
-    Volumes = { "/data" = { }; };
-    ExposedPorts = {
-      "8888" = { };
-    };
-    Entrypoint = [ "/entrypoint.sh" ];
-  };
-}
diff --git a/install/nix/default.nix b/install/nix/default.nix
new file mode 100644
index 00000000..5f5bd2dd
--- /dev/null
+++ b/install/nix/default.nix
@@ -0,0 +1,24 @@
+{ pkgs ? import <nixpkgs> { system = "x86_64-linux"; } }:
+
+let
+  mongo = pkgs.callPackage ./mongo.nix {};
+in pkgs.dockerTools.buildImage {
+  name = "hydrooj/web-base";
+  tag = "latest";
+
+  contents = [
+    mongo
+    pkgs.minio
+    pkgs.nodejs
+    pkgs.yarn
+  ];
+
+  config = {
+    WorkingDir = "/data";
+    Volumes = { "/data" = { }; };
+    ExposedPorts = {
+      "8888" = { };
+    };
+    Cmd = [ "hydrooj" ];
+  };
+}
\ No newline at end of file
diff --git a/install/nix/hydro.nix b/install/nix/hydro.nix
new file mode 100644
index 00000000..a10fb7ae
--- /dev/null
+++ b/install/nix/hydro.nix
@@ -0,0 +1,16 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.stdenv.mkDerivation {
+  name = "hydro-0.0.0";
+  system = "x86_64-linux";
+  #TODO install from cache
+  src = ../../.yarn/cache;
+  unpackPhase = "ls $src";
+
+  meta = {
+    description = "Hydro";
+    homepage = https://hydro.js.org/;
+    maintainers = [ "undefined <i@undefined.moe>" ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
diff --git a/install/nix/mongo.nix b/install/nix/mongo.nix
new file mode 100644
index 00000000..39b27ea5
--- /dev/null
+++ b/install/nix/mongo.nix
@@ -0,0 +1,35 @@
+{ stdenv, fetchurl, dpkg, glibc, xz, curl, openssl, gcc-unwrapped, autoPatchelfHook }:
+
+let in stdenv.mkDerivation {
+  name = "mongodb-5.0.6";
+  system = "x86_64-linux";
+  src = fetchurl {
+    url = "https://repo.mongodb.org/apt/ubuntu/dists/focal/mongodb-org/5.0/multiverse/binary-amd64/mongodb-org-server_5.0.6_amd64.deb";
+    hash = "sha256-Rk43PNQN8p2/3XDDjWOzJmzBjs39CR06kLrTtr+5ngo=";
+  };
+  nativeBuildInputs = [
+    autoPatchelfHook 
+    dpkg
+  ];
+  buildInputs = [
+    glibc
+    openssl # libcrypto.so.1.1 libssl.so.1.1
+    xz # liblzma.so.5
+    curl # libcurl.so.4
+    gcc-unwrapped
+  ];
+  unpackPhase = "true";
+  installPhase = ''
+    mkdir -p $out
+    dpkg -x $src $out
+    mkdir $out/bin
+    mv $out/usr/bin/mongod $out/bin/mongod
+  '';
+
+  meta = {
+    description = "MongoDB";
+    homepage = https://www.mongodb.com/;
+    maintainers = [ "undefined <i@undefined.moe>" ];
+    platforms = [ "x86_64-linux" ];
+  };
+}
\ No newline at end of file