Add ghost

ghost/.env.example

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+url=

ghost/.gitignore

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+/data/*
+!.gitkeep

ghost/docker-compose.yml

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+networks:
+    caddy:
+        name: caddy
+        driver: bridge
+        external: true
+
+services:
+    ghost:
+        image: ghost:5-alpine
+        container_name: ghost
+        networks:
+            - caddy
+        environment:
+            database__client: sqlite3
+            database__connection__filename: content/data/ghost.db
+            NODE_ENV: production
+        volumes:
+            - ./data:/var/lib/ghost/content
+
+volumes:
+    ghost: