Docks in a dream usually represent the end of the journey and a place to rest. As a whole, docks are seen as symbols of safety and refuge in many dreams. They act as a place that one can retreat to when they need time to rest or time to think. This can be interpreted by the dreamer as a sign of resiliency and their ability to bounce back from the tough times.
In some instances, it signifies a settling down or place people have set up that they feel comfortable with, or perhaps a settlement or state that allows its dwellers affluence and security. Some would view stability as honesty about the clear waters ahead and their strong reaction to maneuvering through rough waters successfully. It can be further seen as dealing with an emotional rollercoaster without letting it permanently impact your ability to think clearly.