How to Dockerize your new scimgateway project

DataDockerfile

# To build: docker build --force-rm=true -t scimgateway-data:latest .
# To run: docker run -d --name scimgateway-data -t scimgateway-data:latest

FROM busybox:latest
MAINTAINER Jeffrey Gilbert

RUN mkdir -p /home/scimgateway/config
VOLUME /home/scimgateway/config

CMD ["echo", "Data container for scimgateway created and will now shutdown.  No need to run again."]

docker-compose.yml

version: '2'
services:
  scimgateway:
    build: 
      context: .
      dockerfile: Dockerfile
    image: scimgateway:latest
    container_name: scimgateway
    hostname:
      scimgateway
    volumes:
      - /home/scimgateway/config:/home/scimgateway/config:rw
    volumes_from:
      - scimgateway-data
    ports:
      - "8880:8880"
    environment:
      - ENVIRONMENT=development
      - PORT=8880
      - SEED=localhost
    restart: on-failure:3
            
  scimgateway-data:
    image: scimgateway-data:latest
    container_name: scimgateway-data
    build:
      context: .
      dockerfile: DataDockerfile

Dockerfile

# Docker version 1.13.0
#
# Depending on your system you  may need to prefix the commands below with sudo.
#
# To build:  docker build --force-rm=true -t <projectName>:1.0.0 .
#   Example:  docker build --force-rm=true -t scimgateway:1.0.0 .
#
# To tag as latest:   docker tag <projectName>:1.0.0 <projectName>:latest
#   Example:   docker tag scimgateway:1.0.0 scimgateway:latest
#
# To run:   docker run -d -e NODE_ENV=<environment> -e PORT=<port> -h localhost -p <external port>:<internal port> --name <projectName> <projectName>:latest
#   Example:   docker run -d -e NODE_ENV=development -e PORT=3000  -h localhost -p 8880:8880 --name scimgateway scimgateway:latest


# Debian Jessie linux with node user account and group
FROM node:6.9.2-slim

# Declare who maintains this Dockerfile
MAINTAINER Charles Watson <cwatsonx@costco.com>

# Add a Process ID 1 Safety Net.  Specific to debian.
ADD https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64 /usr/local/bin/dumb-init
RUN chmod +x /usr/local/bin/dumb-init

# Setup environment or env variables with sane defaults.  Note they can be overridden via the command line.
ENV NODE_ENV np  # Either np or prod.
ENV PORT 8880
ENV SEED localhost

# Define your working directory for the node app.
WORKDIR /home/scimgateway
ENV NODE_HOME /home/scimgateway

# Add your project info
ADD ./package.json $NODE_HOME

# Install npm dependencies (exclude test stuff for dependencies)
RUN . ~/.bashrc && cd $NODE_HOME && npm install --production 2> npm_output.txt && npm cache clear 2> /dev/null

# Copy your project's code to your working directory
COPY . $NODE_HOME

# Default http port
EXPOSE 8880

# Start it up
CMD ["dumb-init", "node", "index.js"]

gistfile1.txt

How to run scimgateway as a Docker image (using docker-compose).  Note I tested this on a Debian Jessie several times.  Additionally I tested with scimgateway 0.4.2 and 0.4.5 and both ran fine.  

Docker Pre-requisites:

- docker-ce
- docker-compose

Install scimgateway following the instructions at https://github.com/jelhub/scimgateway.

mkdir myScimGateway
cd myScimGateway
npm init -y
npm install scimgateway --save

Add the following attached files in this Gist to your new scimgateway project:
-----------------------------

- docker-compose.yml   <== Here is where you would set the exposed port and seed
- Dockerfile   <== Main dockerfile
- DataDockerfile   <== Handles volume mapping 

Create a scimgateway user on your Linux VM.  I'll let you choose the password

`adduser scimgateway`

Create a directory on your VM host for the scimgateway configs:

`mkdir /home/scimgateway/config`

Copy your updated scimgateway/config/plugin-loki.json file to /home/scimgateway/config.  Use scp to perform the copy.

NOTE: /home/scimgateway/config is where all of important configuration and loki datastore will reside.  **Outside of the running docker container.  If you upgrade scimgateway you won't loose you configurations and data.**

Build docker images and start it up!

`docker-compose up --build -d`

NOTE: Add the -d flag to run the command above detached.

To confirm scimgateway created it loki.db:
```
su scimgateway
cd /home/scimgateway/config
ls loki.db
```

Be sure to confirm that port 8880 is available with a simple http request

To view the logs
`docker logs scimgateway`

To execute command within your running container:
`docker exec scimgateway <bash command>`

To stop scimgateway:
`docker-compose stop`

To restart scimgateway:
`docker-compose start`

To upgrade scimgateway docker image (remove the old stuff before running docker-compose up --build):
```
docker rm scimgateway
docker rm $(docker ps -a -q); docker rmi $(docker images -q -f "dangling=true")
```

Have fun!