There will come a point when you have been resource gathering and are ready to build a dome. Be sure to have plenty of resources, especially concrete, to construct a dome. You need to go to the domes tab in the build menu and pick the only option, small dome, and find a location near your deposits and your drones. If you have the materials, your drones will automatically start building the dome. When it is fully constructed, the achievement will pop.
Very easy achievement that you will unlock while playing.