The Government has published Resilience & Recovery 2020-2021: Plan for Living with Covid-19, which aims to help people go about their daily lives as much as possible, while managing the behaviour of the virus. The Framework consists of 5 levels. Most of Ireland is now in level 2. Dublin is in level 2 with some additional modifications.
You can get details of each level of the plan on gov.ie:
We are updating information on citizensinformation.ie about the plan and how it will affect you. You can read the full Plan on gov.ie (pdf).
You can also get information on supports for businesses.