docs: Use mkdocs to render documentation

.editorconfig

@@ -8,3 +8,7 @@ trim_trailing_whitespace = true
 [*.{scd,go}]
 indent_style = tab
 indent_size = 4
+
+[*.yml]
+indent_style = tab
+indent_size = 2

.mkdocs.yml

@@ -0,0 +1,29 @@
+site_name: maddy documentation
+
+repo_url: https://github.com/foxcpp/maddy
+
+theme: readthedocs
+
+markdown_extensions:
+  - codehilite:
+      guess_lang: false
+
+nav:
+  - README.md
+  - Tutorials:
+    - tutorials/setting-up.md
+    - tutorials/manual-installation.md
+  - get.sh.md
+  - Manual pages:
+    - man/_generated_maddy.1.md
+    - man/_generated_maddy-auth.5.md
+    - man/_generated_maddy-config.5.md
+    - man/_generated_maddy-filters.5.md
+    - man/_generated_maddy-imap.5.md
+    - man/_generated_maddy-smtp.5.md
+    - man/_generated_maddy-storage.5.md
+    - man/_generated_maddy-targets.5.md
+    - man/_generated_maddy-tls.5.md
+  - Internals:
+    - internals/quirks.md
+    - internals/sqlite.md

README.md

@@ -10,25 +10,26 @@ changes happen from time to time**
 
 ## Features
 
-* Comprehensive & secure
+- Comprehensive & secure
   - IMAP4rev1 & SMTP server in one binary
   - [DKIM][dkim] signing and verification
   - [SPF][spf] policy enforcement
   - [DMARC][dmarc] policy enforcement
   - [MTA-STS][mtasts] policy enforcement
-* Simple to configure
+- Simple to configure
   - Two steps (excluding messing with DNS) to get your own
     _secure_ mail server running
   - Virtual users > system users
-* Fast
+- Fast
   - Optimized for concurrency
   - Single process model allows more efficient implementation
-* Useful
+- Useful
   - [Subaddressing][subaddr] support
   - [DNSBL][dnsbl] checking support
   - Messages compression (LZ4, Zstd)
 
 Planned:
+
 - [Backscatter][backscatter] filtering (BATV) (#106)
 - Address aliases (#82, #18)
 - Zero-configuration full-text search (foxcpp/go-imap-sql#21)
@@ -44,15 +45,10 @@ Detailed explaination of what you need to do to get it running can be found
 
 ## Documentation
 
-Reference documentation is maintained as a set of man pages
-in the [scdoc](https://git.sr.ht/~sircmpwn/scdoc) format.
-Rendered pages can be browsed [here](https://foxcpp.dev/maddy-reference).
+The full documentation is published [here](https://foxcpp.dev/maddy/)
 
-Tutorials and misc articles can be found on
-the [project wiki](https://github.com/foxcpp/maddy/wiki).
-
-Examples of more advanced configurations with explainations can be 
-found in the [examples](examples/) directory.
+Examples of more advanced configurations with explainations can be found in the
+[examples](examples/) directory in the source repository.
 
 ## Community
 
@@ -79,4 +75,4 @@ The code is under MIT license. See [LICENSE](LICENSE) for more information.
 [dnsbl]: https://en.wikipedia.org/wiki/DNSBL
 [backscatter]: https://en.wikipedia.org/wiki/Backscatter_(e-mail)
 
-[setup-tutorial]: https://github.com/foxcpp/maddy/wiki/Tutorial:-Setting-up-a-mail-server-with-maddy
+[setup-tutorial]: https://foxcpp.dev/maddy/tutorial/setting-up/

dist/systemd/maddy.service

@@ -2,7 +2,7 @@
 Description=maddy mail server
 Documentation=man:maddy(1)
 Documentation=man:maddy.conf(5)
-Documentation=https://github.com/foxcpp/maddy/wiki
+Documentation=https://foxcpp.dev/maddy/
 After=network.target
 
 [Service]

dist/systemd/maddy@.service

@@ -1,5 +1,8 @@
 [Unit]
 Description=maddy mail server (using %i.conf)
+Documentation=man:maddy(1)
+Documentation=man:maddy.conf(5)
+Documentation=https://foxcpp.dev/maddy/
 After=network.target
 
 [Service]