Scheduled job for Docker cleanup

.gitlab-ci.yml

@@ -5,10 +5,13 @@ stages:
     - test
     - publish
     - deploy
+    - cleanup
 
 install:
     image: node:14
     stage: setup
+    only:
+        - pushes
     script:
         - npm ci
     artifacts:
@@ -19,6 +22,8 @@ install:
 audit:
     image: python:3.9
     stage: audit
+    only:
+        - pushes
     needs: []
     before_script:
         - pip install poetry==1.1.13
@@ -30,6 +35,8 @@ audit:
 test:
     image: python:3.9
     stage: test
+    only:
+        - pushes
     needs: []
     services:
         - postgres:12
@@ -51,6 +58,8 @@ test:
 lint:py:
     image: python:3.9
     stage: lint
+    only:
+        - pushes
     needs: []
     script:
         - pip install black==22.3.0
@@ -59,6 +68,8 @@ lint:py:
 lint:js:
     image: node:14
     stage: lint
+    only:
+        - pushes
     needs: ["install"]
     script:
         - npm run lint:js
@@ -66,13 +77,15 @@ lint:js:
 lint:md:
     image: node:14
     stage: lint
+    only:
+        - pushes
     needs: ["install"]
     script:
         - npm run lint:md
 
 publish:
-    stage: publish
     image: docker:stable
+    stage: publish
     needs: ["test", "lint:py", "lint:js", "lint:md"]
     services:
         - docker:stable-dind
@@ -86,8 +99,8 @@ publish:
         - docker push "$IMAGE_NAME"
 
 deploy:dev:
-    stage: deploy
     image: docker:stable
+    stage: deploy
     only:
         - develop
     environment:
@@ -128,4 +141,48 @@ deploy:production:
     script:
         - docker stack deploy --with-registry-auth -c stack-compose.yml "$SERVICE_NAME"
     after_script:
-        - docker logout "$CI_REGISTRY"
+        - docker logout "$CI_REGISTRY"
+
+docker_prune:dev:
+    image: docker:stable
+    stage: cleanup
+    only:
+        - schedules
+    environment:
+        name: dev
+        url: http://api.dev.sahkoinsinoorikilta.fi
+    variables:
+        DOCKER_HOST: $DEV_CI_DOCKER_HOST
+        DOCKER_TLS_VERIFY: 1
+    before_script:
+        - mkdir -p ~/.docker
+        - echo "$DEV_TLSCACERT" > ~/.docker/ca.pem
+        - echo "$DEV_TLSCERT" > ~/.docker/cert.pem
+        - echo "$DEV_TLSKEY" > ~/.docker/key.pem
+        - docker login -u gitlab-ci-token -p "$CI_BUILD_TOKEN" "$CI_REGISTRY"
+    script:
+        - docker system prune
+    after_script:
+        - docker logout "$CI_REGISTRY"
+
+docker_prune:prod:
+    image: docker:stable
+    stage: cleanup
+    only:
+        - schedules
+    environment:
+        name: production
+        url: https://api.sahkoinsinoorikilta.fi
+    variables:
+        DOCKER_HOST: $CI_DOCKER_HOST
+        DOCKER_TLS_VERIFY: 1
+    before_script:
+        - mkdir -p ~/.docker
+        - echo "$TLSCACERT" > ~/.docker/ca.pem
+        - echo "$TLSCERT" > ~/.docker/cert.pem
+        - echo "$TLSKEY" > ~/.docker/key.pem
+        - docker login -u gitlab-ci-token -p "$CI_BUILD_TOKEN" "$CI_REGISTRY"
+    script:
+        - docker system prune
+    after_script:
+        - docker logout "$CI_REGISTRY"