Developer : This will run the container using the Developer Edition (this is the default if no MSSQL_PID environment variable is supplied)
Express : This will run the container using the Express Edition
Standard : This will run the container using the Standard Edition
Enterprise : This will run the container using the Enterprise Edition
EnterpriseCore : This will run the container using the Enterprise Edition Core <valid product id> : This will run the container with the edition that is associated with the PID