Enable the app to be built using Docker

.dockerignore

@@ -0,0 +1,6 @@
+*
+!Gemfile
+!Gemfile.lock
+!docker_postgres.sh
+!db/functions
+!lib/quad_tile

DOCKER.md

@@ -0,0 +1,41 @@
+# Using Docker to run OpenStreetMap
+
+Using [Docker](https://www.docker.com/) will allow you to install the OpenStreetMap application and all it's dependencies in a container.
+
+### Clone the repo
+
+```
+git clone --depth=1 https://github.com/openstreetmap/openstreetmap-website.git
+```
+
+### App configuration
+
+```
+cp config/example.application.yml config/application.yml
+```
+
+### Database
+
+```
+cp config/example.database.yml config/database.yml
+```
+
+Set `username` to postgres and `host` to db leave the password blank
+
+### Installation
+
+```
+docker-compose up
+```
+
+### Migrations
+
+```
+docker-compose exec web bundle exec rake db:migrate
+```
+
+### Tests
+
+```
+docker-compose exec web bundle exec rake test:db
+```

Dockerfile

@@ -0,0 +1,29 @@
+FROM ruby:2.3-slim
+MAINTAINER OpenStreetMap
+ENV REFRESHED_AT 2016-09-15
+
+# Install packages
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  build-essential \
+  ruby-dev \
+  libgdbm-dev \
+  libncurses5-dev \
+  libffi-dev \
+  libyaml-dev \
+  libreadline-dev \
+  libpq-dev \
+  libxml2-dev \
+  imagemagick \
+  libmagickwand-dev \
+  postgresql-client \
+  nodejs \
+  file
+
+# Setup app location
+RUN mkdir -p /app
+WORKDIR /app
+
+# Install gems
+ADD Gemfile /app/Gemfile
+ADD Gemfile.lock /app/Gemfile.lock
+RUN bundle install

Dockerfile.postgres

@@ -0,0 +1,9 @@
+FROM postgres:9.4
+
+ADD docker_postgres.sh docker-entrypoint-initdb.d/docker_postgres.sh
+ADD db/functions/ db/functions/
+ADD lib/quad_tile/ lib/quad_tile/
+
+RUN apt-get update && apt-get install -y make \
+  postgresql-server-dev-all \
+  build-essential

INSTALL.md

@@ -3,7 +3,9 @@
 These instructions are designed for setting up The Rails Port for development and testing.
 If you want to deploy the software for your own project, then see the notes at the end.
 
-You can install the software directly on your machine, which is the traditional and probably best-supported approach. However, there is an alternative which may be easier: Vagrant. This installs the software into a virtual machine, which makes it easier to get a consistent development environment and may avoid installation difficulties. For Vagrant instructions, see [VAGRANT.md](VAGRANT.md).
+You can install the software directly on your machine following the instructions below, which is the traditional and probably best-supported approach.
+
+Alternatively there are guides to use either [Vagrant](VAGRANT.md) or [Docker](DOCKER.md).
 
 These instructions are based on Ubuntu 12.04 LTS, which is the platform used by the OSMF servers.
 The instructions also work, with only minor amendments, for all other current Ubuntu releases, Fedora and MacOSX

docker-compose.yml

@@ -0,0 +1,22 @@
+version: '2'
+services:
+  web:
+    image: openstreetmap-website:v1
+    build:
+      context: .
+      dockerfile: Dockerfile
+    volumes:
+      - .:/app
+    ports:
+      - "3000:3000"
+    command: ./script/rails s -p 3000 -b '0.0.0.0'
+    depends_on:
+      - db
+  db:
+    build:
+      context: .
+      dockerfile: Dockerfile.postgres
+    ports:
+      - "5432:5432"
+    environment:
+      POSTGRES_DB: openstreetmap

docker_postgres.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+psql -v ON_ERROR_STOP=1 -U "$POSTGRES_USER" -c "CREATE EXTENSION btree_gist" openstreetmap
+make -C db/functions libpgosm.so
+psql -v ON_ERROR_STOP=1 -U "$POSTGRES_USER" -c "CREATE FUNCTION maptile_for_point(int8, int8, int4) RETURNS int4 AS '${PWD}/db/functions/libpgosm', 'maptile_for_point' LANGUAGE C STRICT" openstreetmap
+psql -v ON_ERROR_STOP=1 -U "$POSTGRES_USER" -c "CREATE FUNCTION tile_for_point(int4, int4) RETURNS int8 AS '${PWD}/db/functions/libpgosm', 'tile_for_point' LANGUAGE C STRICT" openstreetmap
+psql -v ON_ERROR_STOP=1 -U "$POSTGRES_USER" -c "CREATE FUNCTION xid_to_int4(xid) RETURNS int4 AS '${PWD}/db/functions/libpgosm', 'xid_to_int4' LANGUAGE C STRICT" openstreetmap