Add cover images for posts

src/content/about/about.md

@@ -1,8 +1,3 @@
----
-title: "aurora"
-description: "Minimalistic blog theme built with Astro, focused on accessibility and usability."
----
-
 ## About
 
 aurora is a minimal blog theme built with Astro, Svelte and plain CSS. It is focused on accessibility and usability.

src/content/blog/build-a-good-website.md

@@ -1,4 +1,6 @@
 ---
+cover: "../../assets/blog/build-a-good-website/cover.jpg"
+coverAlt: "Cover image for the blog post"
 title: "Build a good website"
 publicationDate: 2023-05-07
 description: "Learn to create and publish a performant, accessible and SEO friendly website."

src/content/blog/markdown-style-guide.md

@@ -1,4 +1,6 @@
 ---
+cover: "../../assets/blog/markdown-style-guide/cover.jpg"
+coverAlt: "Cover image for the blog post"
 title: "Markdown style guide"
 publicationDate: 2023-05-20
 description: "Here is a sample of some basic Markdown syntax that can be used when writing Markdown content in Astro."

src/content/blog/nix-flake-examples.md

@@ -1,4 +1,6 @@
 ---
+cover: "../../assets/blog/nix-flake-examples/cover.jpg"
+coverAlt: "Cover image for the blog post"
 title: "Nix flake examples"
 publicationDate: 2023-05-12
 description: "Improve reproducibility, composability and usability of nix-based projects with flakes and the experimental cli commands."

src/content/config.ts

@@ -1,18 +1,15 @@
 import { z, defineCollection } from "astro:content";
 
 export const collections = {
-  home: defineCollection({
-    schema: z.object({
-      title: z.string(),
-      description: z.string(),
-    }),
-  }),
   blog: defineCollection({
-    schema: z.object({
+    schema: ({ image }) => z.object({
+      cover: image().refine((img) => img.width >= 1080, {
+        message: "Cover image must be at least 1080 pixels wide!",
+      }),
+      coverAlt: z.string(),
       title: z.string(),
       publicationDate: z.date(),
       description: z.string(),
-      workInProgress: z.boolean().default(false),
     }),
   }),
 };