Modify documentation to reflect PORT variable and default to 8080

docker/server/README.md

@@ -9,14 +9,23 @@ With local ZIM file(s)
 * Given `wikipedia.zim` and `wiktionary.zim` reside in `/tmp/zim/`, execute the following:
 
 ```bash
-docker run -v /tmp/zim:/data -p 8080:80 kiwix/kiwix-serve wikipedia.zim wiktionary.zim
+docker run -v /tmp/zim:/data -p 8080:8080 kiwix/kiwix-serve wikipedia.zim wiktionary.zim
 ```
 
 With remote ZIM file
 --------------------
 
 ```bash
-docker run -e "DOWNLOAD=https://download.kiwix.org/zim/wikipedia_bm_all.zim" -p 8080:80 kiwix/kiwix-serve
+docker run -e "DOWNLOAD=https://download.kiwix.org/zim/wikipedia_bm_all.zim" -p 8080:8080 kiwix/kiwix-serve
+```
+
+Change default port
+-------------------
+
+You can change port to expose with environment PORT, useful if running on Podman, K8s or OpenShift
+
+```bash
+podman run -e "DOWNLOAD=https://download.kiwix.org/zim/wikipedia_bm_all.zim" -e PORT=8888 -p 8080:8888 kiwix/kiwix-serve
 ```
 
 ARM

docker/server/docker-compose.yml.example

@@ -2,7 +2,7 @@ version: '3.3'
 services:
   kiwix-serve:
       ports:
-        - 8080:80
+        - 8080:8080
       image: kiwix/kiwix-serve
       # uncomment next 4 lines to use it with local zim file in /tmp/zim
       # volumes: