Update docs

Author: heloufir

.github/workflows/docker-image.yml

@@ -2,8 +2,7 @@ name: Docker Image CI
 
 on:
   push:
-    tags:
-      - 'v*.*.*'
+    branches: [ master ]
 
 jobs:
 

docs/docker.md

@@ -0,0 +1,31 @@
+# Docker
+
+The application is available as a Docker image too, and can be used in 2 ways:
+
+## Build image locally
+
+You can build the image locally in your development environment, by using the **Docker** files in the project root.
+
+To build the docker image you can execute the following command:
+
+```bash
+docker build --network=host -t devaslanphp/helper:latest .
+```
+
+After the image is created in your docker, you can use the following command to construct your docker container:
+
+```bash
+docker-compose up -d
+```
+
+This will create a docker container for you in a daemon mode.
+
+> This command uses the file `docker-compose.yml` existing in the project root folder, so before executing the `docker-compose` you need to update the environment variable in this folder.
+
+## Use the Docker hub image
+
+You can use the docker hub image instead of building the image locally [https://hub.docker.com/r/eloufirhatim/helper](https://hub.docker.com/r/eloufirhatim/helper).
+
+> You can refer to the `docker-compose.yml` file to have an example how to use the hub image instead of the local image
+
+> Important: The docker hub image is pushed automatically after a new release tag is created in the repository