Answers for "ouldn't connect to Docker daemon at http+docker://localhost - is it running?"

ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

open the terminal and type sudo dockerd and leave it open
open new terminal and type sudo docker-compose up -d or sudo docker-compose build

Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?

Add this to the bitbucket-pipeline.yaml file, on the right step:
services:
  - docker