diff --git a/modules/yodaYoga.nix b/modules/yodaYoga.nix
index dd6107a..b46192f 100644
--- a/modules/yodaYoga.nix
+++ b/modules/yodaYoga.nix
@@ -8,10 +8,28 @@
     ];
   };
 
+  # Download BikeTripPlanner Git repository.
   home-manager.users.yoda = { osConfig, config, pkgs, ... }: {
     home.file."readonly-git/BikeTripPlanner".source = (builtins.fetchGit {
       url = "https://github.com/langbein-daniel/BikeTripPlanner";
       #leaveDotGit = true;
     });
   };
+
+  # Start BikeTripPlanner during boot.
+  # To few the log, run
+  #   journalctl -b -u BikeTripPlanner -f
+  #
+  systemd.services."BikeTripPlanner" = {
+    description = "Start BikeTripPlanner";
+    path = with pkgs; [
+      bash
+      docker
+    ];
+    script = ''
+      docker compose -f /home/yoda/readonly-git/BikeTripPlanner/deployment/btp-only.yml up -d --wait
+    '';
+    # Start after login.
+    wantedBy = [ "multi-user.target" ];
+  };
 }