Build docker image in gitlab, add docs for turn key docker setup

.gitlab-ci.yml

@@ -1,8 +1,15 @@
+.only-default: &only-default
+  only:
+    - master
+    - branches
+    - merge_requests
+
 stages:
 - pre-commit
 - gitlab
 - test
 - deploy
+- docker
 
 include:
 - template: Dependency-Scanning.gitlab-ci.yml
@@ -15,6 +22,7 @@ before_script:
   - pip install wheel tox
 
 pre-commit-check:
+  <<: *only-default
   stage: pre-commit
   image: python:3.6-buster
   variables:
@@ -39,6 +47,7 @@ dependency_scanning:
   - pip install wheel tox
 
 test-3.7-core:
+  <<: *only-default
   image: python:3.7-bullseye
   script:
   - tox -e py37-core
@@ -48,6 +57,7 @@ test-3.7-core:
       cobertura: coverage.xml
 
 test-3.8-core:
+  <<: *only-default
   image: python:3.8-bullseye
   script:
   - tox -e py38-core
@@ -57,6 +67,7 @@ test-3.8-core:
       cobertura: coverage.xml
 
 test-3.9-core:
+  <<: *only-default
   image: python:3.9-bullseye
   script:
   - tox -e py39-core
@@ -66,6 +77,7 @@ test-3.9-core:
       cobertura: coverage.xml
 
 test-3.10-core:
+  <<: *only-default
   image: python:3.10-bullseye
   script:
   - tox -e py310-core
@@ -75,6 +87,7 @@ test-3.10-core:
       cobertura: coverage.xml
 
 test-3.7-all:
+  <<: *only-default
   image: python:3.7-bullseye
   script:
   - tox -e py37-all
@@ -84,6 +97,7 @@ test-3.7-all:
       cobertura: coverage.xml
 
 test-3.8-all:
+  <<: *only-default
   image: python:3.8-bullseye
   script:
   - tox -e py38-all
@@ -93,6 +107,7 @@ test-3.8-all:
       cobertura: coverage.xml
 
 test-3.9-all:
+  <<: *only-default
   image: python:3.9-bullseye
   script:
   - tox -e py39-all
@@ -102,6 +117,7 @@ test-3.9-all:
       cobertura: coverage.xml
 
 test-3.10-all:
+  <<: *only-default
   image: python:3.10-bullseye
   script:
   - tox -e py310-all
@@ -123,3 +139,65 @@ deploy_production:
 
   rules:
     - if: $CI_COMMIT_TAG
+
+build-image:
+  before_script: []
+  image: docker:20.10.10
+  stage: docker
+  services:
+    - docker:20.10.10-dind
+  script: |
+    CURRENT_DATE=$(echo $CI_COMMIT_TIMESTAMP | head -c 10 | tr -d -)
+    IMAGE_TAG=$CI_REGISTRY_IMAGE/auth:$CURRENT_DATE-$CI_COMMIT_SHORT_SHA
+    CURRENT_TAG=$CI_REGISTRY_IMAGE/auth:$CI_COMMIT_TAG
+    MINOR_TAG=$CI_REGISTRY_IMAGE/auth:$(echo $CI_COMMIT_TAG | cut -d '.' -f 1-2)
+    MAJOR_TAG=$CI_REGISTRY_IMAGE/auth:$(echo $CI_COMMIT_TAG | cut -d '.' -f 1)
+    LATEST_TAG=$CI_REGISTRY_IMAGE/auth:latest
+
+    docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    docker build . -t $IMAGE_TAG -f docker/Dockerfile --build-arg AUTH_VERSION=$(echo $CI_COMMIT_TAG | cut -c 2-)
+    docker tag $IMAGE_TAG $CURRENT_TAG
+    docker tag $IMAGE_TAG $MINOR_TAG
+    docker tag $IMAGE_TAG $MAJOR_TAG
+    docker tag $IMAGE_TAG $LATEST_TAG
+    docker image push --all-tags $CI_REGISTRY_IMAGE/auth
+  rules:
+    - if: $CI_COMMIT_TAG
+
+build-image-dev:
+  before_script: []
+  image: docker:20.10.10
+  stage: docker
+  services:
+    - docker:20.10.10-dind
+  script: |
+    CURRENT_DATE=$(echo $CI_COMMIT_TIMESTAMP | head -c 10 | tr -d -)
+    IMAGE_TAG=$CI_REGISTRY_IMAGE/auth:$CURRENT_DATE-$CI_COMMIT_BRANCH-$CI_COMMIT_SHORT_SHA
+
+    docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    docker build . -t $IMAGE_TAG -f docker/Dockerfile --build-arg AUTH_PACKAGE=git+https://gitlab.com/allianceauth/allianceauth@$CI_COMMIT_BRANCH
+    docker push $IMAGE_TAG
+  rules:
+    - if: '$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME == ""'
+      when: manual
+    - if: '$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME != ""'
+      when: never
+
+build-image-mr:
+  before_script: []
+  image: docker:20.10.10
+  stage: docker
+  services:
+    - docker:20.10.10-dind
+  script: |
+    CURRENT_DATE=$(echo $CI_COMMIT_TIMESTAMP | head -c 10 | tr -d -)
+    IMAGE_TAG=$CI_REGISTRY_IMAGE/auth:$CURRENT_DATE-$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME-$CI_COMMIT_SHORT_SHA
+
+    docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    docker build . -t $IMAGE_TAG -f docker/Dockerfile --build-arg AUTH_PACKAGE=git+$CI_MERGE_REQUEST_SOURCE_PROJECT_URL@$CI_MERGE_REQUEST_SOURCE_BRANCH_NAME
+    docker push $IMAGE_TAG
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
+      when: manual
+    - if: '$CI_PIPELINE_SOURCE != "merge_request_event"'
+      when: never