Update Dockerfile

1 job for master in 12 seconds (queued for 1 second)
Name Stage Failure
build Build
Digest: sha256:9c8574156de1ce0d98bee83c974f755d706fcba4b6518cd03067656405620c7c
Status: Image is up to date for git.app.uib.no:4567/itpublic/dockerimages/centosfpmcookery:latest
$ docker build --cache-from $CI_REGISTRY_IMAGE:latest --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA --tag $CI_REGISTRY_IMAGE:latest .
Sending build context to Docker daemon 116.7kB
Error response from daemon: Dockerfile parse error line 4: unknown instruction: &&
Running after_script
Uploading artifacts for failed job
ERROR: Job failed: exit code 1