Factory Method Pattern

How to execute the example code

enter the .docker folder, and run the following command:
```
.\build.bat
```
get back to the root folder, and run the following command:
```
.\run-container.ps1
```

enter the .docker folder, and run the following command:
```
./build.sh
```
get back to the root folder, and run the following command
```
./run-container.sh
```

at this point we are inside the container, let's run the followng command:
```
composer update
```
then enter the project folder:
```
cd HeroExample/src/
```

Run the program as follows:

php main.php factory=0

or

php main.php factory=1