Add production Alpine and Debian Stretch Docker images (#225)

* First pass at a (swarm-compatible) docker image

Uses an existing traefik server as a https reverse proxy.

* Add example config for a Docker swarm deployment

* Point to traefik config for docker compose setup

* Clarify that traefik is needed for the example config

* Use node:8-stretch base image and don't install yarn

(The base image already contains yarn.)

* Initial commit for an Alpine Docker image

* Fix docker volume path

* Merge #213 and #225 and move files around

* Remove unnecessary dependencies from the alpine build

* Update Dockerfiles to match install path, config path, etc.

* Update the configuration in the example compose file

* Update the configuration in the example swarm file

* Remove the declared networks and volumes from the compose example, which are not strictly required

* Update attachment path in the documentation

* Display traefik as a suggestion and not a required dependency

* Update the Docker ignored files

* Fix typos reported in #225

* Move production Dockerfiles to a production directory

* Add the redis configuration settings

* Add Docker files to the dockerignore

* Make the signup limit configurable

1 files changed, 18 insertions, 0 deletions

diff --git a/support/doc/production.md b/support/doc/production.md
index c18b4ead0..ae7f3e0f6 100644
--- a/support/doc/production.md
+++ b/support/doc/production.md
@@ -315,3 +315,21 @@ $ OLD_VERSION="v0.42.42" && SQL_BACKUP_PATH="backup/sql-peertube_prod-2018-01-19
     pg_restore -U peertube -c -d peertube_prod "$SQL_BACKUP_PATH"
     sudo systemctl restart peertube
 ```
+
+## Installation on Docker Swarm
+
+There is an example configuration for deploying peertube and a postgres database as a Docker swarm stack. It works like this:
+
+(_Note_: You need to make sure to set `traefik` and `peertube` labels on the target node(s) for this configuration to work.)
+
+1. Install a traefik loadbalancer stack (including Let's Encrypt) on your docker swarm. [Here](https://gist.github.com/djmaze/2684fbf147d775c8ee441b4302554823) is an example configuration.
+
+2. Copy the [example stack file](support/docker/production/docker-stack.example.yml) for peertube:
+
+        scp support/docker/production/docker-stack.example.yml root@your-server:/path/to/your/swarm-config/peertube.yml
+
+2. Have a look at the file and adjust the variables to your need.
+
+3. Deploy the stack:
+
+        docker stack deploy -c peertube.yml peertube