Recategorize and sync tags

Now that we have a bit more content a structure is starting to show.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

_posts/2024-01-30-ospf-unnumbered-infix.md

@@ -3,6 +3,7 @@ title:  OSPF Unnumbered Interfaces
 author: vatn
 date:   2024-01-30 17:06:42 +0200
 last_modified_at: 2026-03-11 12:25:00 +0100
+categories: [howto]
 tags: [networking, ospf]
 image:
   path: /assets/img/ospf-unnumbered-fig1.svg

_posts/2024-03-08-containers.md

@@ -2,8 +2,8 @@
 title: Docker Containers
 author: troglobit
 date: 2024-03-08 15:44:42 +0100
-categories: [showcase]
-tags: [container, containers, docker, podman]
+categories: [howto]
+tags: [containers, docker, podman]
 image:
   path: /assets/img/docker.webp
   alt: Docker whale

_posts/2024-03-11-advanced-containers.md

@@ -2,8 +2,8 @@
 title: Advanced Container Networking
 author: troglobit
 date: 2024-03-11 14:11:50 +0100
-categories: [showcase]
-tags: [container, containers, docker, podman]
+categories: [howto]
+tags: [containers, docker, podman]
 image:
   path: /assets/img/docker.webp
   alt: Docker whale

_posts/2024-03-12-firewall-container.md

@@ -3,8 +3,8 @@ title: Firewall Container
 author: troglobit
 date: 2024-03-12 08:08:41 +0100
 last_modified_at: 2026-02-27 12:00:00 +0100
-categories: [showcase]
-tags: [container, containers, networking, firewall, docker, podman]
+categories: [howto]
+tags: [containers, networking, firewall, docker, podman]
 image:
   path: /assets/img/docker.webp
   alt: Docker whale

_posts/2024-10-15-basic-container.md

@@ -3,8 +3,8 @@ title: Gentle Container Introduction
 author: troglobit
 date: 2024-10-15 07:00:00 +0100
 last_modified_at: 2026-02-27 12:00:00 +0100
-categories: [showcase]
-tags: [container, containers, networking, docker, podman]
+categories: [howto]
+tags: [containers, networking, docker, podman]
 image:
   path: /assets/img/docker.webp
   alt: Docker whale

_posts/2025-07-12-new-docs.md

@@ -2,6 +2,8 @@
 title: Infix User's Guide
 author: troglobit
 date: 2025-07-12 16:54:00 +0100
+categories: [misc]
+tags: [docs, announcement]
 ---
 
 We have now launched a slightly more accessible documentation for Infix, enjoy! 🧡

_posts/2026-03-11-inside-infix.md

@@ -4,7 +4,7 @@ description: "Built on YANG, Built to Last"
 author: troglobit
 date: 2026-03-11 12:25:00 +0100
 categories: [architecture]
-tags: [design, architecture, yang, netconf, buildroot, sysrepo]
+tags: [design, yang, netconf, buildroot, sysrepo]
 image:
   path: /assets/img/architecture-overview.svg
   alt: Infix architecture overview showing the management stack