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DoCD (pronounced 'Docked') is a containerization alternative to Docker. DoCD uses system relevant package managers for dependency management and has built-in continuous-deployment support with git webhooks.

DoCD is ideal for projects with multiple service dependencies in the same repo (i.e. React + Flask + MongoDB etc.), developed in machines not powerful enough to run a dedicated VM.

It is also useful in environments where implementation of continuous-deployment tools (i.e. Jenkins) is not practical and the developer needs a quick way to automatically deploy code to development/production servers.

Expected Project Directory Structure

my-project/
  logs/
    service-1.log
    service-2.log
  service-1/
    index.js
  service-2/
    hello.py
  DoCD-config.json

System Requirements

As of Release 0.1.0b3:

• Windows 7 64-bit (Windows 10 Recommended)
• Powershell v3

Getting Started

1. Download and extract the latest DoCD binaries (the zip file) from the release page
2. Run the DoCD Installer 1.0.0.exe executable as an administrator
3. In an administrative shell, navigate to your project directory
4. Generate your DoCD-config.json configuration file (NOTE: For help, see here)
   1. Enter docd init to launch the interactive shell
   2. Enter generate to launch the configuration generator utility
   3. Proceed through the prompts, enter exit or Ctrl-c to finish
5. Build your project
   1. Navigate to your project root directory
   2. Enter docd build

Continuous Deployment

To setup your project to automatically deploy to you dev/prod servers, in your server:

1. Start your project with docd build or docd start
2. Launch ngrok with enable-cd
3. Copy your ngrok public URL
4. Add a new webhook in your Github repository
   1. Navigate to your webhook settings at <your-github-repo-url>/settings/hooks/new
   2. Paste <your-copied-ngrok-url>/github-push-master in the Payload URL
   3. Set Content Type to application/json
   4. Hit Add Webhook

NOTE: To disable continuous deployment while your project is running, enter disable-cd

With this, any latest change to the active git branch will be immediately deployed to the server.

Understanding the DoCD-config.json File

The DoCD-config.json file is a hybrid of the NodeJS package.json file and Docker's Dockerfile. It stores basic project information, such as Project Name, along with, service installation an build instructions.

Configuration Fields

Base Configuration

Field	Type	Description	Options	Required
ProjectName	String	The name of your project	-	False
BasePackageManager	String	The software manager used by DoCD to install your services	choco (Windows) brew (macOS) apt-get (Linux)	True
Services	Array (Service)	The configurations for each of your project services	-	True

Service Configuration

Field	Type	Description	Options	Required
ServiceName	String	The name of the service package as defined by Chocolatey	Search for your package here	True
PackageManager	String	Service specific package managers	(i.e. pip for python)	False
Path	String	Path to the directory where you store the code for your service	(i.e. ./service-1)	False
LogFilePath	String	Path to the file where you want to store the logs for your service	(i.e. ./logs/service-1.log)	True
InstallationCommands	Array (Command)	Commands to install and configure the service	-	True
BuildCommands	Array (Command)	Commands to compile and launch the service	-	True

Command Configuration

Field	Type	Description	Options	Required
Directory	String	The relative directory in which you want to execute the command	(i.e. \\service-1) - NOTE: Can be a blank string for project directory	True
Command	String	The bash command you want to run	(i.e. flask run --host=0.0.0.0)	True
Environment	Array (String)	Any environment variables required for your command	(i.e. FLASK_APP=hello.py)	False

Sample Configuration File

{
  "ProjectName": "simple-flask-react-webapp",
  "BasePackageManager": "choco",
  "Services": [
    {
      "ServiceName": "python",
      "Path": "service-2",
      "PackageManager": "pip",
      "LogFilePath": "./logs/service-2.log",
      "InstallationCommands": [
        {
          "Directory": "",
          "Command": "python -m venv venv"
        },
        {
          "Directory": "\\venv\\Scripts",
          "Command": "cmd.exe /C activate.bat"
        },
        {
          "Directory": "\\service-2",
          "Command": "pip install -e ."
        }
      ],
      "BuildCommands": [
        {
          "Directory": "\\service-2",
          "Command": "flask run",
          "Environment": ["FLASK_APP=hello.py", "FLASK_DEBUG=1"]
        }
      ]
    }
  ]
}

License

Code

All DoCD source code is licensed under the MIT License.

Logo

Copyright to Shounak Datta, 2020.