Running PHP, Apache and MySQL with Docker & docker-compose

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I can't figure out how to use my containers after they are running in Docker (through docker-compose).

I've been reading up on Docker for the last few weeks and I'm interested in building an environment that I could develop on that and I could replicate efficiently to collaborate with my colleagues.

I've read through the following articles:

<a href="https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-compose-on-centos-7" rel="nofollow noreferrer">https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-compose-on-centos-7</a>

<a href="https://www.digitalocean.com/commun...hpmyadmin-with-docker-compose-on-ubuntu-14-04" rel="nofollow noreferrer">https://www.digitalocean.com/commun...hpmyadmin-with-docker-compose-on-ubuntu-14-04</a>

<a href="https://www.digitalocean.com/commun...work-with-docker-data-volumes-on-ubuntu-14-04" rel="nofollow noreferrer">https://www.digitalocean.com/commun...work-with-docker-data-volumes-on-ubuntu-14-04</a>

I've installed Docker and Docker Compose through a Bash script made up of the commands found in the previous articles: (Run as sudo)

## Install Docker package
function docker_install {
    echo "__ installing docker"
    # Run installer script
    wget -qO- https://get.docker.com/ | sh
    # Add user parameter to docker group
    usermod -aG docker $1
    # Enable docker on boot
    sudo systemctl enable docker.service
    # Start docker now
    sudo systemctl start docker.service
}

## Install docker-compose package
function docker-compose_install {
    echo "__ installing docker-compose"
    # Update yum repo
    sudo yum install epel-release
    # Install pip with "yes" flag
    sudo yum install -y python-pip
    # Install SSL Extension
    sudo pip install backports.ssl_match_hostname --upgrade
    # Install docker-compose through pip
    sudo pip install docker-compose
    # Upgrade python
    sudo yum upgrade python*
}

# Call Functions
docker_install
docker-compose_install

And I have a

docker-compose.yml

file for my Docker images. (For now I'm only pulling PHP and Apache as a proof-of-concept, I will include MySQL once can get PHP and Apache working together)

php:
  image: php
  links:
    - httpd
httpd:
  image: httpd
  ports:
    - 80:80

I call a

sudo docker-compose up -d

and I don't receive any errors:

Creating containerwrap_httpd_1
Creating containerwrap_php_1

Any my question is:
When I run a

php -v

and

service httpd status

after the images are running I receive:

-bash: php: command not found

and

● httd.service
   Loaded: not-found (Reason: No such file or directory)
   Active: inactive (dead)

If the images are running why am I not able to use PHP or see the status of Apache? How am I supposed to utilize my PHP and Apache containers?

<h1>Update</h1>

I've asked a more informed version of <a href="https://stackoverflow.com/questions/46997791/containerizing-apache-mysql-and-php-with-docker">this question again</a>.