Add header images for blog posts

Author: cloudlena

package-lock.json

@@ -6,6 +6,7 @@ tags: ["kubernetes", "kubevirt", "virtualization", "kvm", "containers"]
 excerpt:
   "Discover how KubeVirt extends Kubernetes to run and manage virtual machines
   alongside containers using the same APIs, tools, and workflows."
+image: ../../assets/blog/kubevirt.png
 ---
 
 Running containers on Kubernetes is now the standard - but many organizations

src/assets/blog/external-engineers.png

@@ -7,6 +7,7 @@ excerpt:
   "Avoid common serverless pitfalls and level up your game with this
   comprehensive guide covering logging, tracing, cold starts, security, and
   deployment strategies."
+image: ../../assets/blog/serverless-game.png
 ---
 
 Is your serverless project running into unexpected snags? You're not alone. From

src/assets/blog/kubevirt.png

@@ -7,6 +7,7 @@ excerpt:
   "Maximize the value of external consultants with effective onboarding, clear
   communication, and well-defined expectations to ensure they contribute
   meaningfully to your project."
+image: ../../assets/blog/external-engineers.png
 ---
 
 So, you hired external engineers to help with your project — but now you realize

src/assets/blog/serverless-game.png

@@ -2,14 +2,15 @@ import { defineCollection, z } from "astro:content";
 
 const blog = defineCollection({
   type: "content",
-  schema: z.object({
-    title: z.string(),
-    author: z.string(),
-    date: z.date(),
-    tags: z.array(z.string()),
-    excerpt: z.string(),
-    image: z.string().optional(),
-  }),
+  schema: ({ image }) =>
+    z.object({
+      title: z.string(),
+      author: z.string(),
+      date: z.date(),
+      tags: z.array(z.string()),
+      excerpt: z.string(),
+      image: image().optional(),
+    }),
 });
 
 const customers = defineCollection({