Create README.md

Author: atsanna

README.md

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+# codeigniter4-docker
+Basic example to create your container (tested on Ubuntu 18.04 - Docker version 19.03.5, build 633a0ea838):
+
+**NOTE: This package is under early development and is not ready for prime-time.**
+
+create this structure:
+```
+codeigniter/
+    - conf/apache.conf
+    - Dockerfile
+    - startScript.sh
+```    
+    
+Go to the codeigniter folder:
+```
+cd codeigniter
+```
+
+build the image:<br>
+```
+docker build . -t codeginiter:4.0.2
+```
+
+start the container:
+```
+docker container run --publish 80:80 --name ci4 -v /app/test/localfolder:/var/www/html codeginiter:4.0.2
+```