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https://github.com/iorga-group/docker-cmd
A Docker NodeJS lib wrapping the Docker command line and managing it from a json file.
https://github.com/iorga-group/docker-cmd
Last synced: about 1 month ago
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A Docker NodeJS lib wrapping the Docker command line and managing it from a json file.
- Host: GitHub
- URL: https://github.com/iorga-group/docker-cmd
- Owner: iorga-group
- License: apache-2.0
- Created: 2014-09-05T11:58:58.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2017-05-22T09:46:51.000Z (over 7 years ago)
- Last Synced: 2024-04-27T11:33:18.370Z (8 months ago)
- Language: JavaScript
- Homepage:
- Size: 28.3 KB
- Stars: 22
- Watchers: 4
- Forks: 7
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# docker-cmd
[](https://travis-ci.org/iorga-group/docker-cmd)
> A Docker NodeJS lib wrapping the Docker command line and managing it from a json file.
## Installation
`npm install -g docker-cmd` or as a dependency in your `package.json` if you want to use it as a library.
If you have installed NodeJS on a debian based system with official packages, you have to create a symlink in order to have `node` command in the path ([like said here](http://stackoverflow.com/a/18130296/535203)):
```bash
sudo ln -s /usr/bin/nodejs /usr/bin/node
```
## Usage
`docker-cm` (for "docker command manager") will read a `dockerdesc.json` file and call `docker` with the parameters described in that file.
```asciidoc
docker-cm executes the given docker command, reading arguments from the given dockerdesc file and the given options and args.
Usage: docker-cm [options] [dockerOptions] [descriptionOptions] [commandOptions] [commandArgs]
Options:
-h, --help output usage information
-V, --version output the version number
-C, --dockerdesc Specify the path to the dockerdesc file. Defaults to <./dockerdesc.json>
DockerOptions: All the options you want to pass to docker command before the command name
CommandName: The docker command name to execute
DescriptionOptions: Options depending on the command, overriding the ones from the dockerdesc
DescriptionTarget: Name of the target to read from the dockerdesc
CommandOptions: All the options to override from the dockerdesc file
CommandArgs: The args to pass to the docker command, after the command options, overriding those described in the dockerdesc file
```
The `dockerdesc.json` file allows you to store the arguments you want to give to the `docker` command, enhanced by a templates system.
Here is the format :
```json
{
"templates": {
"a_docker_command": {
"name_of_a_template": {
"a_specific_option_for_that_command": "its_value",
"dockerOptions": {
"a_docker_option": "its_value"
},
"options": {
"a_docker_option_for_that_command": "its_value",
"_": ["args", "to", "pass", "after", "the", "options"]
}
}
}
},
"a_docker_command": {
"a_description_target_name": {
"a_specific_option_for_that_command": "its_value",
"templates": ["name_of_a_template", "name_of_another_template"],
"dockerOptions": {
"a_docker_option": "its_value"
},
"options": {
"a_docker_option_for_that_command": "its_value",
"_": ["args", "to", "pass", "after", "the", "options"]
}
}
}
}
```
* `a_docker_command` is for example `run` or `build` or another docker command
* `a_docker_option` is for example `host` or `H` which corresponds to `--host` or `-H` of `docker` [command line options](https://docs.docker.com/reference/commandline/cli/) (before the COMMAND).
* `a_specific_option_for_that_command` is a specific option used by `docker-cm` for the docker command it refers to
* `a_docker_option_for_that_command` is an option for the docker command it refers to. For example, it is `detach` or `p` for `--detach` or `-p` options for the `run` command. See the [options definition section](#options) for more information.
* "`_`" property in the `options` section is used for the arguments passed to the docker command after its options
* `templates` in description sections is a list of the templates to use for that description. A template named `default` will always be used by every descriptions without specifying it. Check the [templates definition section](#templates) for more information.
### Build specific options
```asciidoc
"build": {
"name_of_the_build": {
"path": {string} Path to the Dockerfile parent dir or path to the Dockerfile (relative to the dockerdesc.json file)
"buildParent": {boolean=true} Whether to build parent or not
"buildTagFromBuildName": {boolean=true} - Whether to automatically add a "-tag" for the build command from the name of the build description
```
By default, when building an image, `docker-cm` will look in the target `Dockerfile` the `FROM` instruction in order to check if that "parent" image is described itself in the `dockerdesc.json`. If it is the case, and `buildParent` is true, `docker-cm` will first build the parent image.
You can use either the `path` property or the `options._` one.
### Run descriptions
```asciidoc
"run": {
"name_of_the_run": {
"image": {string} Image name to run
"command": {string[]} The command and its args
"useRunName": {boolean=true} Whether to automatically add a "--name" for the run command from the name of the run description
```
You can use either the `image` property then `command` one or the `options._` one.
### Options
The options (both for `run` or `build` docker command) are the arguments that will be passed to docker directly.
For example, if you want to run `docker run --interactive=true -t ubuntu` the `options` json object will be :
```asciidoc
"options": {
"interactive": true,
"t": null
}
```
### Templates
```asciidoc
"templates": {
"build": {
"name_of_that_build_template": {
// same json part as a normal build description
}
},
"run": {
"name_of_that_run_template": {
// same json part as a normal run description
```
In the templates, you set the properties that will be added to the description (`run`, `build` or another command) which call them by specifying `"templates": ["name_of_one_template", "name_of_a_second_one"]`.
If you name a template "`default`", it will be activated by default without specifying it in a `"templates"` property.
### Defaults
Here are the defaults that are applied if not specified.
Default `run` description:
```json
{
"useRunName": true
}
```
Default `build` description:
```json
{
"buildTagFromBuildName": true,
"buildParent": true
}
```
### Example
Here is a sample `dockerdesc.json` file :
```json
{
"templates": {
"run": {
"default": {
"options": {
"tty": "true",
"detach": "true",
"interactive": "true"
}
},
"attached": {
"options": {
"detach": "false",
}
}
}
},
"build": {
"iorga_group/java7": {
"path": "java7",
"options": {
"tag": "java"
}
},
"iorga_group/tomcat7": {
"path": "tomcat7"
}
},
"run": {
"tomcat7": {
"image": "iorga_group/tomcat7",
"options": {
"publish": ["8080:8080", "8009:8009"]
}
},
"tomcat7-backup": {
"image": "ubuntu",
"templates": "attached",
"options": {
"rm": true,
"volumes-from": "tomcat7",
"volume": "/tmp:/tmp"
},
"command": ["/bin/bash", "-c", "cd /opt/tomcat7 && tar czf /tmp/tomcat7_backup.tgz ./"]
}
}
}
```
## Using `DockerCmd`
Here is a sample code :
```javascript
var DockerCmd = require("docker-cmd");
var dockerCmd = new DockerCmd();
dockerCmd.build({tag: 'test', _: './test'}, null, function(dockerBuildExitCode) {
console.log('test built');
if (dockerBuildExitCode === 0) {
dockerCmd.run({name: 'test', _: 'test'}, null, function(dockerRunExitCode) {
console.log('test run and finished.');
});
}
});
```
That object will call the `docker` command with all the options you gave as a first parameter.
The second parameter is used for `dockerOptions` (with a `host` property for example).
It has no complex logic and will just call the `docker` command with the given parameters.
Find the complete doc directly [in `DockerCmd` sources](lib/docker-cmd.js).
## Using `DockerCmdManager`
Here is a sample code :
```javascript
var DockerCmdManager = require("docker-cmd").Manager;
var dockerCmdManager = new DockerCmdManager('./test/dockerdesc.json');
dockerCmdManager.build('test', function(dockerBuildExitCode) {
console.log('test built');
if (dockerBuildExitCode === 0) {
dockerCmdManager.run('test', function(dockerRunExitCode) {
console.log('test run and finished.');
});
}
});
```
That object will read a `dockerdesc.json` file and call a `DockerCmd` with the parameters specified in the dockerdesc.
`DockerCmdManager` handles dependencies between builds for `build` command.
`docker-cm` command line uses that object.
Find the complete doc directly [in `DockerCmdManager` sources](lib/docker-cmd-manager.js).