Add Docker Compose Support

.dockerignore

@@ -0,0 +1 @@
+docker-db-data

.gitignore

@@ -18,3 +18,6 @@ public/attachments
 public/export
 storage
 tmp
+
+# docker-compose database directory
+docker-db-data

DOCKER.md

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+# Using Docker and Docker Compose to run OpenStreetMap
+
+Using [Docker](https://www.docker.com/) will allow you to install the OpenStreetMap application and all its dependencies in Docker images and then run them in containers, almost with a single command. You will need to install Docker and Docker Compose on your development machine:
+
+- [Install Docker](https://docs.docker.com/install/)
+- [Install Docker Compose](https://docs.docker.com/compose/install/)
+
+These instructions gloss over the precise details of the dependencies and their configuration but these can be found in full detail at [INSTALL.md](INSTALL.md).
+
+The first step is to fork/clone the repo to your local machine. The repository is reasonably large (~150MB) and it's unlikely that you need the full history. If you are happy to wait for it all to download, run:
+
+    git clone https://github.com/openstreetmap/openstreetmap-website.git
+
+To clone only the most recent version (~23MB), instead use a 'shallow clone':
+
+    git clone --depth=1 https://github.com/openstreetmap/openstreetmap-website.git
+
+Now change working directory to the `openstreetmap-website`:
+
+    cd openstreetmap-website
+
+### Storage setup
+
+    cp config/example.storage.yml config/storage.yml
+
+### Database
+
+    cp config/docker.database.yml config/database.yml
+
+### App configuration
+
+    cp config/settings.yml config/settings.local.yml
+
+### Installation
+
+In the root directory run:
+
+    docker-compose build
+
+Now if this is your first time running or you have removed cache this will take some time to complete. So grab tea/coffee and sit tight. Once the Docker images have finished building you can launch the images as containers.
+
+To launch the app run:
+
+    docker-compose up -d
+
+This will launch one Docker container for each 'service' specified in `docker-compose.yml` and run them in the background. There are two options for inspecting the logs of these running containers:
+
+- You can tail logs of a running container with a command like this: `docker-compose logs -f web` or `docker-compose logs -f db`.
+- Instead of running the containers in the background with the `-d` flag, you can launch the containers in the foreground with `docker-compose up`. The downside of this is that the logs of all the 'services' defined in `docker-compose.yml` will be intermingled. If you don't want this you can mix and match - for example, you can run the database in background with `docker-compose up -d db` and then run the Rails app in the foreground via `docker-compose up web`.
+
+### Migrations
+
+While the `db' service is running, open another terminal windows and run:
+
+    docker-compose run --rm web rake db:migrate
+
+### Node.js modules
+
+We use Yarn to manage the Node.js modules required for the project:
+
+    docker-compose run --rm web rake yarn:install
+
+Once these are complete you should be able to visit the app at http://localhost:3000
+
+If localhost does not work, you can use the IP address of the docker-machine.
+
+### Tests
+
+    docker-compose run --rm web rake test:db
+
+### Bash
+
+If you want to get into a web container and run specific commands you can fire up a throwaway container to run bash in via:
+
+    docker-compose run --rm web bash
+
+Alternatively, if you want to use the already-running `web` container then you can `exec` into it via:
+
+    docker-compose exec web bash
+
+Similarly, if you want to `exec` in the db container use:
+
+    docker-compose exec db bash
+
+### Populating the database
+
+This installation comes with no geographic data loaded. You can either create new data using one of the editors (Potlatch 2, iD, JOSM etc) or by loading an OSM extract.
+
+After installing but before creating any users or data, import an extract with [Osmosis](https://wiki.openstreetmap.org/wiki/Osmosis) and the `--write-apidb` task. The `web` container comes with `osmosis` pre-installed. So to populate data with a `.osm.pbf` use the following command:
+
+    docker-compose run --rm web osmosis \
+        --read-pbf /path/to/file.osm.pbf \
+        --write-apidb \
+        host="db" \
+        database="openstreetmap" \
+        user="openstreetmap" \
+        validateSchemaVersion="no"

Dockerfile

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+FROM ruby:2.5
+
+# fixes dpkg man page softlink error while installing postgresql-client [source: https://stackoverflow.com/a/52655008/5350059]
+RUN mkdir -p /usr/share/man/man1 && \
+    mkdir -p /usr/share/man/man7
+
+# npm is not available in Debian repo so following official instruction [source: https://github.com/nodesource/distributions/blob/master/README.md#debinstall]
+RUN curl -sL https://deb.nodesource.com/setup_10.x -o nodesource_setup.sh && \
+    bash nodesource_setup.sh && \
+    rm -f nodesource_setup.sh
+
+# install packages
+RUN apt-get update && \
+    apt-get install --no-install-recommends -y \
+      build-essential \
+      curl \
+      imagemagick \
+      libarchive-dev \
+      libffi-dev \
+      libmagickwand-dev \
+      libpq-dev \
+      libsasl2-dev \
+      libxml2-dev \
+      libxslt1-dev \
+      locales \
+      nodejs \
+      osmosis \
+      postgresql-client \
+      ruby-dev && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# install npm packages
+RUN npm install -g --unsafe-perm \
+      phantomjs-prebuilt \
+      yarn
+
+# Setup app location
+RUN mkdir -p /app
+WORKDIR /app
+
+# Install gems
+ADD Gemfile* /app/
+RUN bundle install
+
+# Setup local
+RUN sed -i -e 's/# en_GB.UTF-8 UTF-8/en_GB.UTF-8 UTF-8/' /etc/locale.gen && \
+    echo 'LANG="en_GB.UTF-8"'>/etc/default/locale && \
+    dpkg-reconfigure --frontend=noninteractive locales && \
+    update-locale LANG=en_GB.UTF-8
+
+ENV LANG en_GB.UTF-8

Makefile

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+docker-build:
+	docker-compose build
+
+docker-up:
+	docker-compose up -d
+
+docker-db-migrate:
+	docker-compose run --rm web rake db:migrate
+
+docker-test:
+	docker-compose run --rm web rake test:db
+
+docker-populate-db:
+	wget https://download.geofabrik.de/north-america/us/district-of-columbia-latest.osm.pbf
+	docker-compose run --rm web osmosis \
+		-verbose	\
+		--read-pbf district-of-columbia-latest.osm.pbf \
+		--write-apidb \
+			host="db" \
+			database="openstreetmap" \
+			user="openstreetmap" \
+			validateSchemaVersion="no"

config/docker.database.yml

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+# This configuration is tailored for use with docker-compose. See DOCKER.md for more information.
+
+development:
+  adapter: postgresql
+  database: openstreetmap
+  username: openstreetmap
+  password: openstreetmap
+  host: db
+  encoding: utf8
+
+# Warning: The database defined as 'test' will be erased and
+# re-generated from your development database when you run 'rake'.
+# Do not set this db to the same as development or production.
+test:
+  adapter: postgresql
+  database: osm_test
+  username: postgres
+  password:
+  host: db
+  encoding: utf8

docker-compose.yml

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+version: "3"
+
+services:
+  web:
+    build:
+      context: .
+    volumes:
+      - .:/app
+    ports:
+      - "3000:3000"
+    command: bundle exec rails s -p 3000 -b '0.0.0.0'
+    depends_on:
+      - db
+
+  db:
+    build:
+      context: .
+      dockerfile: docker/postgres/Dockerfile
+    ports:
+      - "54321:5432"
+    environment:
+      POSTGRES_DB: openstreetmap
+    volumes:
+      - ./docker-db-data:/var/lib/postgresql/data

docker/postgres/Dockerfile

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+FROM postgres:11
+
+# Add db init script to install OSM-specific Postgres functions/extensions.
+ADD docker/postgres/openstreetmap-postgres-init.sh /docker-entrypoint-initdb.d/

docker/postgres/openstreetmap-postgres-init.sh

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+#!/bin/bash
+set -ex
+
+# Create 'openstreetmap' user
+psql -v ON_ERROR_STOP=1 -U "$POSTGRES_USER" <<-EOSQL
+    CREATE USER openstreetmap PASSWORD 'openstreetmap';
+    GRANT ALL PRIVILEGES ON DATABASE openstreetmap TO openstreetmap;
+EOSQL
+
+# Create btree_gist extensions
+psql -v ON_ERROR_STOP=1 -U "$POSTGRES_USER" -c "CREATE EXTENSION btree_gist" openstreetmap