start minikube before trying to build the image

[ElvinEfendi]

What this PR does / why we need it:
We need to start Minikube first before trying to build the image otherwise it fails saying docker daemon is not running.

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

[ElvinEfendi]

/assign @aledbf
/assign @antoineco

[codecov-io]

Codecov Report

Merging #2795 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2795   +/-   ##
=======================================
  Coverage   47.58%   47.58%           
=======================================
  Files          75       75           
  Lines        5413     5413           
=======================================
  Hits         2576     2576           
  Misses       2509     2509           
  Partials      328      328

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[antoineco]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: antoineco, ElvinEfendi

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• OWNERS [ElvinEfendi,antoineco]

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