Dynamic ports (#462)

* Dynamic port in compose file

* Omit setting container name

* Add initial sql dump entry

* Avoid resetting database on build

.env

@@ -0,0 +1 @@
+PORT=3000

Makefile

@@ -6,10 +6,11 @@ build:
 	cp config/config.yml.example config/config.yml
 	cp config/initializers/recaptcha.rb.example config/initializers/recaptcha.rb
 	cp db/schema.rb.example db/schema.rb
+	docker-compose down --remove-orphans
 	docker-compose build
-	docker-compose run --rm web bash -l -c "sleep 10 && bower install --allow-root && rake db:setup && rake db:migrate && rake assets:precompile"
 
 deploy-container:
+	docker-compose run --rm web bash -l -c "sleep 10 && bower install --allow-root && rake db:setup && rake db:migrate && rake assets:precompile"
 	docker-compose up -d
 
 redeploy-container:

docker-compose.yml

@@ -1,14 +1,13 @@
 version: '3.3'
 services:
   db:
-    container_name: db
     image: mysql:5.7
     env_file:
       - mapknitter.env
     volumes:
       - ../mysql:/var/lib/mysql
+      - ../dump:/docker-entrypoint-initdb.d
   web:
-    container_name: web
     image: mapknitter-dev
     build:
       context: .
@@ -20,7 +19,7 @@ services:
       - bundle_cache:/usr/local/bundle
       - bower_cache:/app/public/lib
     ports:
-      - 3000:3000
+      - $PORT:3000
     depends_on:
       - db