diff --git a/Attributes/DevelopmentOnlyAttribute.cs b/Attributes/DevelopmentOnlyAttribute.cs
new file mode 100644
index 0000000..2dd98d0
--- /dev/null
+++ b/Attributes/DevelopmentOnlyAttribute.cs
@@ -0,0 +1,21 @@
+using System;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Filters;
+using Microsoft.Extensions.DependencyInjection;
+
+public class DevelopmentOnlyAttribute : Attribute, IResourceFilter
+{
+    public void OnResourceExecuting(ResourceExecutingContext context)
+    {
+        var env = context.HttpContext.RequestServices.GetService<IHostingEnvironment>();
+        if (!env.IsDevelopment())
+        {
+            context.Result = new NotFoundResult();
+        }
+    }
+
+    public void OnResourceExecuted(ResourceExecutedContext context)
+    {
+    }
+}
\ No newline at end of file
diff --git a/Controllers/ContactUsController.cs b/Controllers/ContactUsController.cs
index 460cc89..4972b53 100644
--- a/Controllers/ContactUsController.cs
+++ b/Controllers/ContactUsController.cs
@@ -42,6 +42,7 @@ namespace weddingapi.Controllers
         }
 
         // GET /contact/{id}
+        [DevelopmentOnly]
         [HttpGet("{id}")]
         public async Task<ActionResult<ContactDto>> GetContactAsync(Guid id)
         {
@@ -56,6 +57,7 @@ namespace weddingapi.Controllers
         }
 
         // Delete /contact/{id}
+        [DevelopmentOnly]
         [HttpDelete("{id}")]
         public async Task<ActionResult> DeleteContactAsync(Guid id)
         {
@@ -72,6 +74,7 @@ namespace weddingapi.Controllers
         }
 
         // GET /contacts
+        [DevelopmentOnly]
         [HttpGet]
         public async Task<IEnumerable<ContactDto>> GetContactsAsync()
         {
diff --git a/Controllers/FamilyController.cs b/Controllers/FamilyController.cs
index 9adc94a..98b9273 100644
--- a/Controllers/FamilyController.cs
+++ b/Controllers/FamilyController.cs
@@ -33,6 +33,7 @@ namespace weddingapi.Controllers
         }
 
         // GET /family
+        [DevelopmentOnly]
         [HttpGet]
         public async Task<IEnumerable<FamilyDto>> GetFamiliesAsync()
         {
@@ -42,6 +43,7 @@ namespace weddingapi.Controllers
         }
 
         // GET /family/{id}
+        [DevelopmentOnly]
         [HttpGet("{id}")]
         public async Task<ActionResult<FamilyDto>> GetFamilyAsync(Guid id)
         {
@@ -80,6 +82,7 @@ namespace weddingapi.Controllers
         }
 
         // PUT /family/{id}
+        [DevelopmentOnly]
         [HttpPut("{id}")]
         public async Task<ActionResult> UpdateFamilyAsync(Guid id, UpdateFamilyDto familyDto)
         {
@@ -108,6 +111,7 @@ namespace weddingapi.Controllers
         }
 
         // Delete /family/{id}
+        [DevelopmentOnly]
         [HttpDelete("{id}")]
         public async Task<ActionResult> DeleteFamilyAsync(Guid id)
         {
diff --git a/README.md b/README.md
index 3d964af..0efd5ed 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,8 @@ docker image tag weddingapi:v2 registry.git.rismer.de/rismer/weddingapi:latest
 
 ## Push
 
+docker login registry.git.rismer.de
+
 docker push registry.git.rismer.de/rismer/weddingapi:v2