feature: docker development environment (#544)

Add docker support

It's self-contained so should not interfere with anything else and can easily be thrown out if nobody wants it anymore.

.docker/entrypoint.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+# set +x
+
+pushd /nyaa
+
+echo 'Waiting for MySQL to start up'
+while ! echo HELO | nc mariadb 3306 &>/dev/null; do
+	sleep 1
+done
+echo 'DONE'
+
+if ! [ -f /elasticsearch-sync/flag-db_create ]; then
+	python3 ./db_create.py
+	touch /elasticsearch-sync/flag-db_create
+fi
+
+if ! [ -f /elasticsearch-sync/flag-db_migrate ]; then
+	python3 ./db_migrate.py stamp head
+	touch /elasticsearch-sync/flag-db_migrate
+fi
+
+echo 'Waiting for ES to start up'
+while ! echo HELO | nc elasticsearch 9200 &>/dev/null; do
+	sleep 1
+done
+echo 'DONE'
+
+echo 'Waiting for ES to be ready'
+while ! curl -s -XGET 'elasticsearch:9200/_cluster/health?pretty=true&wait_for_status=green' &>/dev/null; do
+	sleep 1
+done
+echo 'DONE'
+
+if ! [ -f /elasticsearch-sync/flag-create_es ]; then
+	# @source create_es.sh
+	# create indices named "nyaa" and "sukebei", these are hardcoded
+	curl -v -XPUT 'elasticsearch:9200/nyaa?pretty' -H"Content-Type: application/yaml" --data-binary @es_mapping.yml
+	curl -v -XPUT 'elasticsearch:9200/sukebei?pretty' -H"Content-Type: application/yaml" --data-binary @es_mapping.yml
+	touch /elasticsearch-sync/flag-create_es
+fi
+
+if ! [ -f /elasticsearch-sync/flag-import_to_es ]; then
+	python3 ./import_to_es.py | tee /elasticsearch-sync/import.out
+	grep -A1 'Save the following' /elasticsearch-sync/import.out | tail -1 > /elasticsearch-sync/pos.json
+	touch /elasticsearch-sync/flag-import_to_es
+fi
+
+echo 'Starting the Flask app'
+/usr/local/bin/uwsgi /nyaa/.docker/uwsgi.config.ini