Refactor CI process

# improved performance.

variables:

  DOCKER_DRIVER: overlay2

  CONTAINER_IMAGE: registry.gitlab.e.foundation:5000/e/os/lineageota

  PUBLISH_USER: root

  PUBLISH_URL: ota.ecloud.global

services:

- docker:dind

before_script:

- apk --update add openssh-client

- 'which ssh-agent || ( apk --update add openssh-client )'

- eval $(ssh-agent -s)

- echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null

- mkdir -p ~/.ssh

- chmod 700 ~/.ssh

- echo "$SSH_KNOWN_HOSTS" > ~/.ssh/known_hosts

- chmod 644 ~/.ssh/known_hosts

build:

  only:

  - /^master/

  stage: build

  script:

  - docker build -t registry.gitlab.e.foundation:5000/e/os/lineageota .

  - docker pull $CONTAINER_IMAGE:$CI_COMMIT_REF_NAME || true

  - docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN registry.gitlab.e.foundation:5000

  - docker push registry.gitlab.e.foundation:5000/e/os/lineageota

  - mkdir ~/.ssh && echo "${SSHPRIVKEY_TEST}" > ~/.ssh/id_rsa && chmod 700 ~/.ssh && chmod 600 ~/.ssh/*

  - ssh -2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@ota.ecloud.global 'docker login registry.gitlab.e.foundation:5000'

  - ssh -2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@ota.ecloud.global 'docker pull registry.gitlab.e.foundation:5000/e/os/lineageota'

  - ssh -2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@ota.ecloud.global 'cd /mnt/docker/compose/ && docker-compose up -d'

  - ssh -2 -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no root@ota.ecloud.global 'docker restart nginx'

  - rm -rf ~/.ssh

  - docker build --cache-from $CONTAINER_IMAGE:latest -t $CONTAINER_IMAGE -t $CONTAINER_IMAGE:$CI_COMMIT_REF_NAME .

  - docker push $CONTAINER_IMAGE:$CI_COMMIT_REF_NAME

  - if [ "${CI_COMMIT_REF_NAME}" = master ] ; then docker push $CONTAINER_IMAGE:latest ; fi

publish:

  only:

  - /^master/

  script:

  - ssh -2 $PUBLISH_USER@$PUBLISH_URL 'docker pull $CONTAINER_IMAGE:latest'

  - ssh -2 $PUBLISH_USER@$PUBLISH_URL 'cd /mnt/docker/compose-ota-images-apk/ && docker-compose up -d'

  - ssh -2 $PUBLISH_USER@$PUBLISH_URL 'docker restart nginx'