docs: Selfhost with docker

docs/docs/getstarted/docker.md

@@ -1,7 +1,19 @@
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-sidebar_position: 3
+sidebar_position: 2
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-# Running UnitTCMS as a Docker container
+# Running UnitTCMS with Docker
 
-Under development
+First, clone the repository.
+
+```bash
+git clone git@github.com:kimatata/unittcms.git
+```
+
+and start containers with the following command.
+
+```bash
+docker-compose up --build
+```
+
+then, you can access the app at `http://localhost:8000`

docs/docs/getstarted/manual.md

@@ -1,5 +1,5 @@
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-sidebar_position: 2
+sidebar_position: 3
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 # Running UnitTCMS manually

docs/docs/getstarted/selfhost.md

@@ -4,7 +4,7 @@ sidebar_position: 1
 
 # Self hosting
 
-UnitTCMS is designed for self-hosted use. There are two ways to self-host the application: “Manual” and “Docker”.
+UnitTCMS is designed for self-hosted use. There are two ways to self-host the application: “Docker” and “Manual”.
 
+- Docker (Recommended)
 - Manual
-- Docker