ci: add pipeline for publishing CV.

The following changes are included in this commit:

- add a pipeline for publishing the output CV to
the master branch when a change has been
committed to the master branch.

- split the CI configuration into two files:
one for the docker build pipeline and the other
for the CV build pipeline.

.gitignore

@@ -1,3 +1,4 @@
-__output/
+__output/*
+!__output/cv.pdf
 tags
 notes.txt

.gitlab-ci.yml

@@ -1,47 +1,12 @@
 ---
 stages:
 - test
-- build
 - publish
 
 variables:
   IMAGE_NAME: ${CI_REGISTRY}/${CI_PROJECT_PATH}/cv-builder
   IMAGE_TAG: ${CI_COMMIT_REF_SLUG}-${CI_COMMIT_SHORT_SHA}
 
-services:
-- docker:19.03.5-dind
-
-.use-docker:
-  image: docker:19.03.5
-
-.install-deps: &install-deps
-- apk add --no-cache make
-
-test:docker-image:
-  extends: .use-docker
-  script:
-  - *install-deps
-  - make image
-  stage: test
-  only:
-    changes:
-    - docker/Dockerfile
-  except:
-    refs:
-    - master
-
-publish:docker-image:
-  extends: .use-docker
-  before_script:
-  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
-  after_script:
-  - docker logout ${CI_REGISTRY}
-  script:
-  - *install-deps
-  - make publish
-  stage: publish
-  only:
-    changes:
-    - docker/Dockerfile
-    refs:
-    - master@dananglin/cv
+include:
+- local: '/.gitlab/ci/docker-gitlab-ci.yml'
+- local: '/.gitlab/ci/cv-gitlab-ci.yml'

.gitlab/ci/cv-gitlab-ci.yml

@@ -0,0 +1,29 @@
+---
+.use-cv-builder:
+  image: ${IMAGE_NAME}:master-5fbdaa5a
+
+publish:cv:
+  extends: .use-cv-builder
+  before_script:
+  - eval $(ssh-agent -s)
+  - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add -
+  - mkdir -p ~/.ssh && chmod 700 ~/.ssh
+  - echo "$SSH_KNOWN_HOSTS" > ~/.ssh/known_hosts
+  - chmod 0400 ~/.ssh/known_hosts
+  - git remote set-url origin git@gitlab.com:${CI_PROJECT_PATH}.git
+  - git config --global user.email "${GITLAB_USER_EMAIL}"
+  - git config --global user.name "${GITLAB_USER_NAME}"
+  stage: publish
+  script:
+  - make
+  - git checkout master
+  - git add __output/cv.pdf
+  - 'git commit -m "auto: update CV."'
+  - git push origin master
+  only:
+    refs:
+    - master@dananglin/cv
+  except:
+    changes:
+    - docker/Dockerfile
+    - __output/*

.gitlab/ci/docker-gitlab-ci.yml

@@ -0,0 +1,45 @@
+---
+.docker-dind-service:
+  services:
+  - docker:19.03.5-dind
+
+.use-docker:
+  image: docker:19.03.5
+
+.install-deps: &install-deps
+- apk add --no-cache make
+
+test:docker-image:
+  extends:
+  - .docker-dind-service
+  - .use-docker
+  script:
+  - *install-deps
+  - make image
+  stage: test
+  only:
+    refs:
+    - merge_requests
+    changes:
+    - docker/Dockerfile
+  except:
+    refs:
+    - master
+
+publish:docker-image:
+  extends:
+  - .use-docker
+  - .docker-dind-service
+  before_script:
+  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+  after_script:
+  - docker logout ${CI_REGISTRY}
+  script:
+  - *install-deps
+  - make publish
+  stage: publish
+  only:
+    changes:
+    - docker/Dockerfile
+    refs:
+    - master@dananglin/cv