Update Docker Image and gitlab-ci.yml

Minor changes to content.
Status Job ID Name Coverage
  Deploy
failed #136421318
deploy

00:00:49

 
Name Stage Failure
failed
deploy Deploy
hugo: /usr/lib/libstdc++.so.6: no version information available (required by hugo)
hugo: /usr/lib/libstdc++.so.6: no version information available (required by hugo)
hugo: /usr/lib/libstdc++.so.6: no version information available (required by hugo)
hugo: /usr/lib/libstdc++.so.6: no version information available (required by hugo)
hugo: /usr/lib/libstdc++.so.6: no version information available (required by hugo)
Building sites … ERROR 2018/12/18 22:21:17 error: failed to transform resource: POSTCSS: failed to transform "css/main.css" (text/css): PostCSS not found; install with "npm install postcss-cli". See https://gohugo.io/hugo-pipes/postcss/
Total in 251 ms
Error: Error building site: logged 1 error(s)
ERROR: Job failed: exit code 1