Add dev docker-compose file to manage supporting services (#525)

* Added a docker compose file for development
* Added Makefile for quick start and stop
* Added instruction in README.md

Makefile

@@ -0,0 +1,9 @@
+docker-compose-dev := docker compose --profile central -f docker-compose.yml -f docker-compose.dev.yml
+
+.PHONY: dev
+dev:
+	$(docker-compose-dev) up -d
+
+.PHONY: stop
+stop:
+	$(docker-compose-dev) stop

README.md

@@ -28,6 +28,12 @@ In addition to the Backend and the Frontend, Central deploys services:
 * Central relies on [pyxform-http](https://github.com/getodk/pyxform-http) for converting Forms from XLSForm. It generally shouldn't be needed in development but can be run locally.
 * Central relies on [Enketo](https://github.com/enketo/enketo-express) for Web Form functionality. Enketo can be run locally and configured to work with Frontend and Backend in development by following [these instructions](https://github.com/getodk/central-frontend/blob/master/docs/enketo.md).
 
+If you want to work on Central codebase and don't want to setup dependent services like Postgresql, Enketo, etc manually then you can run `make dev`, which will start those services as Docker containers. With this setup you would need a local domain name, `central-dev` is a good choice. Following are the places where you need to add this:
+
+* Set `DOMAIN=central-dev` in .env file. 
+* Add an entry in your `/etc/hosts` file for `127.0.0.1 central-dev`.
+* Create `local.json` in central-backend directory and set value of default.env.domain to `http://central-dev:8989`
+
 Operations
 ----------
 

docker-compose.dev.yml

@@ -0,0 +1,62 @@
+# Assumption: This file will be merged by `docker compose`
+#
+# What it does:
+# Sets profiles for each service depending on whether that 
+# service is required for Central development or not.
+#  
+# depends_on of some services are reset using !reset custom yml tag
+# nb: can't replace depends_on so we have removed all the values, ok for dev
+services:
+  postgres14:
+    profiles:
+      - central
+    ports:
+      - 5432:5432
+  postgres:
+    profiles:
+      - central
+    image: debian:bullseye
+    command: /bin/sh -c 'mkdir -p /var/lib/postgresql/14/data && touch /var/lib/postgresql/14/.postgres14-upgrade-successful'
+  mail:
+    profiles:
+      - none
+  service:
+    profiles:
+      - none
+  nginx:
+    profiles:
+      - none
+  pyxform:
+    profiles:
+      - central
+    ports:
+      - 5001:80
+  secrets:
+    profiles:
+      - central
+    volumes:
+      - dev_secrets:/etc/secrets
+    working_dir: /etc/secrets
+    command: /bin/sh -c 'echo "s0m3v3rys3cr3tk3y" > enketo-secret && echo "this $3cr3t key is crackable" > enketo-less-secret && echo "enketorules" > enketo-api-key'
+  enketo:
+    profiles:
+      - central
+    volumes:
+      - dev_secrets:/etc/secrets
+    depends_on: !override
+      - secrets
+      - enketo_redis_main
+    environment:
+      - ENV=DEV
+    extra_hosts:
+    - "${DOMAIN}:host-gateway"
+    ports:
+      - 8005:8005
+  enketo_redis_main:
+    profiles:
+      - central
+  enketo_redis_cache:
+    profiles:
+      - central
+volumes:
+  dev_secrets: