POC: Introduce Nextcloud based on Nginx web server.

UPDATE:
 - stack.yml contains FPM & Mariadb containers, updated volumes, networking and hostnames for container
TODO:
 - update config.ini for trusted proxies support

This PR introduce POC of Nextcloud based on Nginx web server with php-fpm in separated container.
Basic installation with SQLite and few operations in web gui were tested.

Nginx dockerfile is generated from Dockerfile-nginx.template
  - FROM string has hardcoded variant - apache
  - There is no upstream PHP image with Nginx, due this generate-stackbrew-library is not able to identify parent correctly

New files were introduced in image:
  - Dockerfile-nginx.template
  - nginx-foreground
    + simulates behavior of apache2-foreground cmd
  - 16.0/nginx/Dockerfile
    + generated from template Dockerfile-nginx.template
  - nextcloud.confx
    + Nginx vhost configuration
  - start_net.sh (temporary)
    + Helper script to create user-defined network for Docker
    + '--link' option for docker create is obsolete and we need communication between fpm and nginx container
  - start_container.sh (temporary)
    + Helper script to handle containers
  - Dockerfile
    + /Dockerfile for verification purposes
Updated files:
  - set -x added to all shell scripts for easier troubleshooting (temporary)
  - update.sh
    + New variant introduced
    + Number of builded variant is limited for simplified CI.
  - .travis.yml (temporary)
    + Image push to registry for testing purposes
  - docker-entrypoint.sh
    + Recognizes new argument for entrypoint - nginx-foreground

Be careful during review, github recognizes removed files for 15.0 release as renamed to 16.0/nginx variant

Motivation/Usecase:
  - I have openvz based VPS where only old Docker 1.10 is supported.
  - Apache(in nextcloud container) in combination Nginx as a reverse proxy for multiple vhosts doesn't work correctly

Image pull link:
docker pull 1john2ci/nextcloud:apache-20190509
docker pull 1john2ci/nextcloud:fpm-20190509
Travis CI test: 530329740

Deployment notes:
  - Clone source code
  - Create user-defined network for Docker
  - Start fpm container
  - Start nginx container

.travis.yml

@@ -4,6 +4,7 @@ services: docker
 branches:
   only:
     - master
+    - Nginx
 
 install:
   - git clone https://github.com/docker-library/official-images.git ~/official-images
@@ -30,16 +31,16 @@ after_script:
 # ##
 # For testing purposes only
 # ##
-  - echo "1john2_password" | docker login -u "1john2ci" --password-stdin
+  - echo "${DOCKER_PASSWORD}" | docker login -u "1john2" --password-stdin
 
-  - docker tag nextcloud:16.0-apache 1john2ci/nextcloud:16.0-apache
+  - docker tag nextcloud:16.0-apache 1john2/nextcloud:16.0-apache
-  - docker push 1john2ci/nextcloud:16.0-apache
+  - docker push 1john2/nextcloud:16.0-apache
 
-  - docker tag nextcloud:16.0-nginx 1john2ci/nextcloud:16.0-nginx
+  - docker tag nextcloud:16.0-nginx 1john2/nextcloud:16.0-nginx
-  - docker push 1john2ci/nextcloud:16.0-nginx
+  - docker push 1john2/nextcloud:16.0-nginx
 
-  - docker tag nextcloud:16.0-fpm-full 1john2ci/nextcloud:16.0-fpm-full
+  - docker tag nextcloud:16.0-fpm-full 1john2/nextcloud:16.0-fpm-full
-  - docker push 1john2ci/nextcloud:16.0-fpm
+  - docker push 1john2/nextcloud:16.0-fpm-full
 
 jobs:
   include:

16.0/apache/Dockerfile

@@ -160,6 +160,5 @@ RUN set -ex; \
 
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/nextcloud/config/
-
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["apache2-foreground"]

16.0/fpm/Dockerfile

@@ -152,6 +152,5 @@ RUN set -ex; \
 
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/nextcloud/config/
-
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["php-fpm"]

16.0/nginx/nextcloud.conf

@@ -8,7 +8,7 @@
 # ##
 
 upstream php-handler {
-    server fpm-ncd:9000;
+    server nextcloud-fpm:9000;
 }
 
 server {

Dockerfile-debian.template

@@ -151,6 +151,5 @@ RUN set -ex; \
 
 COPY *.sh upgrade.exclude /
 COPY config/* /usr/src/nextcloud/config/
-
 ENTRYPOINT ["/entrypoint.sh"]
 CMD ["%%CMD%%"]

nextcloud.conf

@@ -8,7 +8,7 @@
 # ##
 
 upstream php-handler {
-    server fpm-ncd:9000;
+    server nextcloud-fpm:9000;
 }
 
 server {

stack.yml

@@ -1,54 +1,90 @@
-version: '3.2'
+version: '2.0'
-
+# ##
+# Configure:
+# export COMPOSE_HTTP_TIMEOUT=1000
+# If you experience timeouts in UnixHTTPConnectionPool function during parallel execution
+# This can happen in shared env with high load - VPS
+# ##
 services:
-  db:
+  database:
-    name: mariadb
+    container_name: database
-    hostname: db
+    hostname: database
-    image: mariadb
+    image: mariadb:10.4.4-bionic
-    tag: 10.4.4-bionic
     restart: always
     volumes:
-      - db:/var/lib/mysql
+      - /srv/mariadb:/var/lib/mysql:rprivate
+    networks:
+      nextcloud:
     environment:
       - MYSQL_ROOT_PASSWORD=mariadb_admin
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud_admin
       - MYSQL_PASSWORD=nextcloud_admin
-  fpm:
+  nextcloud-fpm:
-    name: fpm
+    container_name: nextcloud-fpm
-    hostname: fpm 
+    hostname: nextcloud-fpm
-    image: 1john2ci/nextcloud
+    image: 1john2/nextcloud:16.0-fpm-full
-    tag: 16.0-fpm-full
     restart: always
-    volumes:
-      - nextcloud:/var/www/html
-  app:
-    name: nextcloud
-    hostname: nextcloud
-    image: 1john2ci/nextcloud
-    tag: 16.0-nginx
-    restart: always
-    ports:
-      - 127.0.0.1:8080:80
-    volumes:
-      - nextcloud:/var/www/html
     environment:
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud_admin
       - MYSQL_PASSWORD=nextcloud_admin
-      - MYSQL_HOST=db
+      - MYSQL_HOST=database
-    depends_on:
+      - NEXTCLOUD_ADMIN_USER=admin
-      - db
+      - NEXTCLOUD_ADMIN_PASSWORD=admin
-      - fpm
+      - NEXTCLOUD_TRUSTED_DOMAINS=data.malanik.guru
-  cron:
+    networks:
-    image: nextcloud
+      nextcloud:
-    restart: always
     volumes:
-      - nextcloud:/var/www/html
+      - /srv/nextcloud:/var/www/html:rprivate
-    entrypoint: /cron.sh
     depends_on:
-      - db
+      - database
 
+  nextcloud:
+    container_name: nextcloud
+    hostname: nextcloud
+    image: 1john2/nextcloud:16.0-nginx
+    restart: always
+    networks:
+      nextcloud:
+    ports:
+      - 127.0.0.1:8080:80
+    volumes:
+      - /srv/nextcloud:/var/www/html:rprivate
+    environment:
+      - MYSQL_DATABASE=nextcloud
+      - MYSQL_USER=nextcloud_admin
+      - MYSQL_PASSWORD=nextcloud_admin
+      - MYSQL_HOST=database
+      - NEXTCLOUD_ADMIN_USER=admin
+      - NEXTCLOUD_ADMIN_PASSWORD=admin
+      - NEXTCLOUD_TRUSTED_DOMAINS=data.malanik.guru
+    depends_on:
+      - database
+      - nextcloud-fpm
+
+  nextcloud-cron:
+    container_name: nextcloud-cron
+    hostname: nextcloud-cron
+    image: 1john2/nextcloud:16.0-nginx
+    restart: always
+    networks:
+      nextcloud:
+    entrypoint: /cron.sh
+    volumes:
+      - /srv/nextcloud:/var/www/html:rprivate
+    environment:
+      - MYSQL_DATABASE=nextcloud
+      - MYSQL_USER=nextcloud_admin
+      - MYSQL_PASSWORD=nextcloud_admin
+      - MYSQL_HOST=database
+      - NEXTCLOUD_ADMIN_USER=admin
+      - NEXTCLOUD_ADMIN_PASSWORD=admin
+      - NEXTCLOUD_TRUSTED_DOMAINS=data.malanik.guru
+    depends_on:
+      - database
 volumes:
   db: /srv/mariadb
   nextcloud: /srv/nextcloud
+networks:
+  nextcloud: