GitLab

First I got this error:

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

Google got me these solutions:

https://forum.gitlab.com/t/cannot-connect-to-the-docker-daemon-intermittent-error/26698/2

After clearing the cache I get the following error:

time="2020-04-03T08:34:49Z" level=error msg="failed to dial gRPC: cannot connect to the Docker daemon. Is 'docker daemon' running on this host?: dial tcp 172.17.0.2:2375: connect: connection refused" error during connect: Post http://docker:2375/v1.40/build?buildargs=%7B%7D&cachefrom=%5B%5D&cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&labels=%7B%7D&memory=0&memswap=0&networkmode=default&pull=1&rm=1&session=1c7tah4pvl9z9414v7bm0t40b&shmsize=0&t=cr.gitlab.switch.ch%2Fmemoriav%2Fmemobase-2020%2Fservices%2Fsftp-reader%3Alatest&target=&ulimits=null&version=1: context canceled