Added Dockerfile and entrypoint.sh to build a docker image

[mcbglug]

The docker image generated fetch all ENV from docker end generate .env file

Here an example of startup from command line

docker run --name chronicle -it --rm -p 3334:3334 -e OWNER_PUBKEY=dc1be7fdba0c8a1bf9065cdee45c948d574e780f74894251e9c95d16432655b9 dtonon/chronicle:latest

here a stack example
services:
chronicle:
image: dtonon/chronicle:latest
volumes:
- db:/app/db
ports:
- 3334:3334/tcp
environment:
OWNER_PUBKEY: "dc1be7fdba0c8a1bf9065cdee45c948d574e780f74894251e9c95d16432655b9"
RELAY_NAME: "chronicle.url.io"
RELAY_DESCRIPTION: "My Chronicle Relay"
RELAY_URL: "chronicle.url.io"
RELAY_CONTACT: "Daniele"
FETCH_SYNC: "TRUE"
MIN_FOLLOWERS: 2
DB_PATH: "/app/db"
restart: always

volumes:
db:

[dtonon]

Thanks and sorry for the huge delay!

A couple of things:

• Can we rename entrypoint.sh in something like docker-entrypoint.sh so it's clear that it is used just for Docker?
• It would be nice to add a docker.md with the how to, we can link it on the main readme in a new section:

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Docker

You can run easily run Chronicle with Docker, see the related guide for more information and examples.

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