docker: new features regarding persistence

- added db persistence
- bugfix init_flagfile, as now its volume is persisted, it really does
  the configuration step when needed
- also added production deployment for the non dpp deployment

docker-compose_devicehub-dpp.yml

@@ -29,6 +29,7 @@ services:
     volumes:
       - ${SNAPSHOTS_PATH:-./examples/snapshots}:/mnt/snapshots:ro
       - shared:/shared:rw
+      - app_id_server:/opt/devicehub:rw
 
   postgres-id-server:
     image: dkr-dsg.ac.upc.edu/ereuse/postgres:dpp__bcb4c696
@@ -74,6 +75,7 @@ services:
     volumes:
       - ${SNAPSHOTS_PATH:-./examples/snapshots}:/mnt/snapshots:ro
       - shared:/shared:ro
+      - app_id_client:/opt/devicehub:rw
 
   postgres-id-client:
     image: dkr-dsg.ac.upc.edu/ereuse/postgres:dpp__bcb4c696
@@ -97,3 +99,5 @@ services:
 
 volumes:
   shared:
+  app_id_client:
+  app_id_server:

docker-compose_devicehub.yml

@@ -19,11 +19,13 @@ services:
       - AUTHORIZED_CLIENT_URL=${CLIENT_ID_DEVICEHUB_HOST}
       - DPP_MODULE=n
       - IMPORT_SNAPSHOTS=${IMPORT_SNAPSHOTS}
+      - DEPLOYMENT=${DEPLOYMENT}
     ports:
       - 5000:5000
     volumes:
       - ${SNAPSHOTS_PATH:-./examples/snapshots}:/mnt/snapshots:ro
       - shared:/shared:rw
+      - app:/opt/devicehub:rw
 
   postgres:
     image: dkr-dsg.ac.upc.edu/ereuse/postgres:dpp__bcb4c696
@@ -34,15 +36,20 @@ services:
       - POSTGRES_PASSWORD=${DB_PASSWORD}
       - POSTGRES_USER=${DB_USER}
       - POSTGRES_DB=${DB_DATABASE}
+    volumes:
+      - pg_data:/var/lib/postgresql/data
     # DEBUG
     #ports:
     #  - 5432:5432
-    # TODO persistence
-    #volumes:
-    #  - pg_data:/var/lib/postgresql/data
 
-    # TODO https://testdriven.io/blog/dockerizing-django-with-postgres-gunicorn-and-nginx/
-    #nginx
+  nginx:
+    image: nginx
+    ports:
+      - 8080:8080
+    volumes:
+      - ./docker/nginx-devicehub.nginx.conf:/etc/nginx/nginx.conf:ro
 
 volumes:
   shared:
+  pg_data:
+  app:

docker/devicehub.entrypoint.sh

@@ -172,7 +172,7 @@ config_dpp_part2() {
 }
 
 config_phase() {
-        init_flagfile='/already_configured'
+        init_flagfile='docker__already_configured'
         if [ ! -f "${init_flagfile}" ]; then
                 # 7, 8, 9, 11
                 init_data
@@ -211,10 +211,12 @@ main() {
 
         # 17. Use gunicorn
         #   thanks https://akira3030.github.io/formacion/articulos/python-flask-gunicorn-docker.html
-        # TODO meanwhile no nginx (step 19), gunicorn cannot serve static files, then we prefer development server
-        #gunicorn --access-logfile - --error-logfile - --workers 4 -b :5000 app:app
-        #   alternative: run development server
-        flask run --host=0.0.0.0 --port 5000
+        if [ "${DEPLOYMENT:-}" = "PROD" ]; then
+                gunicorn --access-logfile - --error-logfile - --workers 4 -b :5000 app:app
+        else
+                # run development server
+                FLASK_DEBUG=1 flask run --host=0.0.0.0 --port 5000
+        fi
 
         # DEBUG
         #sleep infinity

docker/nginx-devicehub.nginx.conf

@@ -0,0 +1,32 @@
+user www-data;
+worker_processes auto;
+pid /run/nginx.pid;
+error_log /var/log/nginx/error.log;
+include /etc/nginx/modules-enabled/*.conf;
+
+events {
+       worker_connections 768;
+       # multi_accept on;
+}
+
+
+http {
+    #upstream socket_backend {
+    #    server unix:/socket/gunicorn.sock fail_timeout=0;
+    #}
+    server {
+            listen 8080;
+            listen [::]:8080;
+            #server_name devicehub.example.org;
+
+            location / {
+                    # TODO env var on proxy_pass
+                    proxy_pass http://devicehub:5000/;
+                    proxy_set_header Host $http_host;
+                    proxy_set_header X-Real-IP $remote_addr;
+                    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+                    proxy_set_header X-Forwarded-Proto $scheme;
+                    proxy_redirect off;
+            }
+    }
+}