Refactor image to centralize all redirects

This patch refactors the entire setup of the image. It combines various
redirect configs from images for CodiMD/Hedgedoc and puts them into a
single, universal image that can be deployed for all wanted domains.

.gitlab-ci.yml

-image: quay.io/sheogorath/build-ah-engine
+include:
+  - project: 'container-library/build-ah-engine'
+    ref: 1.3.1
+    file: '/gitlab-ci-template.yml'
 
-before_script:
-  - podman login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
+stages:
+  - build
+  - test
+  - tag
+  - deploy
 
-build-master:
-  stage: build
+nginx-validation:
+  stage: test
+  image: quay.io/sheogorath/build-ah-engine:latest
+  variables:
+    LANG: C.UTF-8
+  before_script:
+    - dnf install -y curl
   script:
-    - podman build --pull -t "$CI_REGISTRY_IMAGE" .
-    - podman push "$CI_REGISTRY_IMAGE" "docker://$CI_REGISTRY_IMAGE"
-  only:
-    - master
+    - podman run -d -p 80:80 --name testing $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG-$CI_COMMIT_SHORT_SHA
+    - sleep 5
+    # Validate config
+    - podman exec testing nginx -c /etc/nginx/nginx.conf -t
+    # Test default
+    - "curl -v -H 'Host: example.org' http://localhost/ 2>&1 | grep -q 'https://hedgedoc.org'"
+    # Test main domain
+    - "curl -v -H 'Host: codimd.org' http://localhost/ 2>&1 | grep -q 'https://hedgedoc.org'"
+    - "curl -v -H 'Host: hedgedoc.org' http://localhost/ 2>&1 | grep -q 'https://hedgedoc.org'"
+    # Test demo
+    - "curl -v -H 'Host: demo.codimd.org' http://localhost/ 2>&1 | grep -q 'https://demo.hedgedoc.org'"
+    - "curl -v -H 'Host: demo.hedgedoc.org' http://localhost/ 2>&1 | grep -q 'https://demo.hedgedoc.org'"
+    # Test social
+    - "curl -v -H 'Host: social.codimd.org' http://localhost/ 2>&1 | grep -q 'https://social.snopyta.org/@CodiMD'"
+    - "curl -v -H 'Host: social.hedgedoc.org' http://localhost/ 2>&1 | grep -q 'https://social.snopyta.org/@CodiMD'"
+    # Test community
+    - "curl -v -H 'Host: community.codimd.org' http://localhost/ 2>&1 | grep -q 'https://community.codimd.org'"
+    - "curl -v -H 'Host: community.hedgedoc.org' http://localhost/ 2>&1 | grep -q 'https://community.codimd.org'"
+    # Test translate
+    - "curl -v -H 'Host: translate.codimd.org' http://localhost/ 2>&1 | grep -q 'https://poeditor.com/join/project/1OpGjF2Jir'"
+    - "curl -v -H 'Host: translate.hedgedoc.org' http://localhost/ 2>&1 | grep -q 'https://poeditor.com/join/project/1OpGjF2Jir'"
+    # Cleanup
+    - podman stop testing
+    - podman rm testing
 
-build:
-  stage: build
-  script:
-    - podman build --pull -t "$CI_REGISTRY_IMAGE" .
-    - echo "Image will be pushed to ${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_SLUG}"
-    - podman push "$CI_REGISTRY_IMAGE" "docker://${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_SLUG}"
-  except:
-    - master
+container-tagging:
+  stage: tag
+  variables:
+    CI_REGISTRY_IMAGE_VERSION: latest
+
+deploy:
+  stage: deploy
+  variables:
+    PLAYBOOK: static_websites.yml
+  trigger:
+    project: shivering-isles/ansible-infrastructure-deploy
+    strategy: depend
+  rules:
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH

Dockerfile

 FROM nginx:alpine
 
-COPY ./nginx.conf /etc/nginx/conf.d/default.conf
+COPY ./nginx.d/*.conf /etc/nginx/conf.d/
 
 EXPOSE 80/tcp

README.md

-Translation redirect
+HedgeDoc redirect
 ===
 
-CodiMD has currently no webpage. So let's redirect people to our GitHub page.
+This project manages all redirects for the HedgeDoc project.
 
 How to build
 ---
@@ -9,7 +9,7 @@ How to build
 Simply build the docker container
 
 ```console
-git clone https://octo.sh/Sheogorath/codimd-redirect
+git clone https://git.shivering-isles.com/codimd/redirect.git
 cd codimd-redirect
 docker build -t quay.io/sheogorath/codimd-redirect:latest .
 ```
@@ -28,4 +28,3 @@ Or run locally to check details:
 ```console
 docker run --rm -it -p 80:80 quay.io/sheogorath/codimd-redirect
 ```
-

nginx.conf

-server {
-        #implemented by default, change if you need different ip or port
-        listen *:80;
-        server_name codimd.org www.codimd.org;
-        return 302 https://github.com/codimd/server;
-}

nginx.d/default.conf

+server {
+        listen *:80;
+        return 302 https://hedgedoc.org$request_uri;
+}

nginx.d/demo.conf

+server {
+        listen *:80;
+        server_name demo.codimd.org demo.hedgedoc.org;
+        return 301 https://demo.hedgedoc.org$request_uri;
+}

nginx.d/git.conf

+server {
+        listen *:80;
+        server_name git.codimd.org git.hedgedoc.org;
+        return 302 https://github.com/hedgedoc/hedgedoc;
+}

nginx.d/social.conf

+server {
+        listen *:80;
+        server_name social.codimd.org social.hedgedoc.org;
+        return 302 https://social.snopyta.org/@CodiMD;
+}

nginx.d/translate.conf

+server {
+        listen *:80;
+        server_name translate.codimd.org translate.hedgedoc.org;
+        return 302 https://poeditor.com/join/project/1OpGjF2Jir;
+}

nginx.d/zz_community.conf

+server {
+        listen *:80;
+        server_name community.codimd.org community.hedgedoc.org;
+        return 302 https://community.codimd.org$request_uri;
+}