Mac os update

I have installed this on my mac a few times and it works, and I think instructions are easy, but it would be nice if someone could follow the directions on their own computer as well.

Main update is adding clear documentation for using docker-compose.

I removed .env off of .gitignore, don't know if that is something that we want. I just think that it makes setting up the image easier for people who have never used docker before. ^This is optional, I find it easier for new users, but if we want to put it back in .gitignore, I can just add something in the documentation.

I added direct variable in docker-compose.yml to set up environmental variables INFORMATICA_USER and INFORMATICA_PASSWORD. There is a error where docker does not pick up .env variable.

I added a line in docker-compose.yml to help users find where to delete the volumes from.

WIP: error with secure agent: Tomcat process of Common Integration Components is not alive. Exit code: 500 Error when trying to get https://localhost:14486/cic-agent/lcm/ping status