docs: update deployment doc

docs/install/docker.md

@@ -0,0 +1,49 @@
+---
+title: Docker
+layout: default
+parent: Installation
+nav_order: 4
+---
+
+# Docker Installation
+
+Details about how to use Goma in Docker can be found on the hub.docker.com repo hosting the image: Goma.
+We also have some cool examples with [Docker Compose template](https://github.com/jkaninda/goma-gateway/tree/main/examples) with built-in orchestration and scalability.
+
+## 1. Initialize configuration
+
+You can generate the configuration file using `config init --output /etc/goma/config.yml` command.
+
+The default configuration is automatically generated if any configuration file is not provided, and is available at `/etc/goma/goma.yml`
+
+```shell
+docker run --rm  --name goma-gateway \
+ -v "${PWD}/config:/etc/goma/" \
+ jkaninda/goma-gateway config init --output /etc/goma/config.yml
+```
+
+### 3. Start server with a custom config
+```shell
+docker run --rm --name goma-gateway \
+ -v "${PWD}/config:/etc/goma/" \
+ -p 8080:8080 \
+ jkaninda/goma-gateway server --config /config/config.yml
+```
+### 4. Healthcheck
+
+- Goma Gateway health check: `/health/live`
+- Routes health check: `health/routes`
+
+### 5. Simple deployment in docker compose file
+
+```yaml
+services:
+  goma-gateway:
+    image: jkaninda/goma-gateway
+    command: server
+    ports:
+      - "8080:8080"
+      - "8443:8443"
+    volumes:
+      - ./config:/etc/goma/
+```