Snyk helps you find, fix and monitor known vulnerabilities in Node.js npm, Ruby and Java dependencies, both on an ad hoc basis and as part of your CI (Build) system.

Documentation
Full documentation is available on snyk.io

Installation

1. Install the Snyk utility using npm install -g snyk.
2. Once installed you will need to authenticate with your Snyk account: snyk auth

For more detail on how to authenticate take a look at the CLI authentication section of the Snyk documentation.

CLI
Run snyk --help to get a quick overview of all commands or for full details on the CLI read the snyk.io CLI docs.
The package argument is optional. If no package is given, Snyk will run the command against the current working directory allowing you test you non-public applications.

Features

• Find known vulnerabilities by running snyk test on a project either as a one off or as part of your CI process.
• Fix vulnerabilities using snyk wizard and snyk protect.
  • snyk wizard walks you through finding and fixing known vulnerabilities in your project. Remediation options include configuring your policy file to update, auto patch and ignore vulnerabilities. (npm only)
  • snyk protect your code from vulnerabilities by applying patches and optionally suppressing specific vulnerabilities.
• Alert snyk monitor records the state of dependencies and any vulnerabilities on snyk.io so you can be alerted when new vulnerabilities or updates/patches are disclosed that affect your repositories.
• Prevent new vulnerable dependencies from being added to your project by running snyk test as part of your CI to fail tests when vulnerable Node.js or Ruby dependencies are added.

Docker
Snyk is also provided as a set of Docker images that carry the runtime environment of each package manager. For example, the npm image will carry all of the needed setup to run npm install on the currently running container. Currently there are images for npm, Ruby, Maven, Gradle and SBT.
The images can perform snyk test by default on the specified project which is mounted to the container as a read/write volume, and snyk monitor if the MONITOR environment variable is set when running the docker container. When running snyk monitor with the GENERATE_REPORT environment variable set, an HTML file called snyk_report.html and a CSS file called snyk_report.css will be generated. The image also writes a file called snyk-res.json for internal use and snyk-error.log for errors that we can look at if something goes wrong.
The following environment variables can be used when running the container on docker:

• SNYK_TOKEN - Snyk API token, obtained from https://snyk.io/account.
• USER_ID - [OPTIONAL] Current user ID on the host machine. If not provided will take the user ID of the currently running user inside the container. This is used for CI builds such as Jenkins where we are running with a non-privileged user and want to allow the user to access the mounted project folder.
• MONITOR - [OPTIONAL] If set, tells the image that we want to run snyk monitor after running snyk test.
• PROJECT_FOLDER - [OPTIONAL] If set, this will cd to the directory inside the mounted project dir to run snyk inside it.
• ENV_FLAGS - [OPTIONAL] additional environment parameters to pass to snyk test when running the container.

Docker images are tagged according to the package manager runtime they include, the package manager version and snyk version. The general format of tags is [snyk-version]-[package-manager]-[package-manager-version] or just [package-manager]-[package-manager-version] if we want to use the latest version of snyk. Please see available tags to see the available options.
[snyk-version] - The version of snyk that is installed in the image, if version is omitted it will use the latest version. [package-manager] - One of the available package managers (e.g: npm, mvn, gradle, etc...).
[package-manager-version] - The version of the package manager that is installed inside the image.
Please see the following examples on how to run Snyk inside docker:

Node.js (npm)
We will need to mount the project root folder when running the image so that Snyk can access the code within the container. The host project folder will be mounted to /project on the container and will be used to read the dependencies file and write results for CI builds. Here's an example of running snyk test and snyk monitor in the image (with the latest version of Snyk) for npm:

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
  snyk/snyk-cli:npm test --org=my-org-name

RubyGems
We will need to mount the project root folder when running the image so that Snyk can access the code within the container. The host project folder will be mounted to /project on the container and will be used to read the dependencies file and write results for CI builds. Here's an example of running snyk test and snyk monitor in the image (with the latest version of Snyk) for RubyGems:

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
  snyk/snyk-cli:rubygems test --org=my-org-name

Maven 3.5.4
We will need to mount the project root folder when running the image so that Snyk can access the code within the container and mount the local .m2 and .ivy2 folders. The host project folder will be mounted to /project on the container and will be used to read the dependencies file and write results for CI builds. Here's an example of running snyk test and snyk monitor in the image (with the latest version of Snyk) for Maven:

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
    -v "/home/user/.m2:/home/node/.m2"
    -v "/home/user/.ivy2:/home/node/.ivy2"
  snyk/snyk-cli:maven-3.5.4 test --org=my-org-name

SBT 0.13.16 / SBT 1.0.4
We will need to mount the project root folder when running the image so that Snyk can access the code within the container and mount the local .m2 and .ivy2 folders. The host project folder will be mounted to /project on the container and will be used to read the dependencies file and write results for CI builds. Here are examples of running snyk test and snyk monitor in the image (with the latest version of Snyk) for SBT:
NOTE: the dependency-tree module is required for snyk to process Scala projects. Use version 0.8.2 for SBT 0.13.16 and version 0.9.0 for version SBT 1.0.4.

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
    -v "/home/user/.m2:/home/node/.m2"
    -v "/home/user/.ivy2:/home/node/.ivy2"
  snyk/snyk-cli:sbt-0.13.16 test --org=my-org-name

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
    -v "/home/user/.m2:/home/node/.m2"
    -v "/home/user/.ivy2:/home/node/.ivy2"
  snyk/snyk-cli:sbt-1.0.4 test --org=my-org-name

Gradle 2.8 / Gradle 4.4
We will need to mount the project root folder when running the image so that Snyk can access the code within the container and mount the local .m2 and .ivy2 folders. The host project folder will be mounted to /project on the container and will be used to read the dependencies file and write results for CI builds. Here's an example of running snyk test and snyk monitor in the image (with the latest version of Snyk) for Gradle:

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
    -v "/home/user/.m2:/home/node/.m2"
    -v "/home/user/.ivy2:/home/node/.ivy2"
  snyk/snyk-cli:gradle-2.8 test --org=my-org-name

docker run -it
    -e "SNYK_TOKEN=<TOKEN>"
    -e "USER_ID=1234"
    -e "MONITOR=true"
    -v "<PROJECT_DIRECTORY>:/project"
    -v "/home/user/.m2:/home/node/.m2"
    -v "/home/user/.ivy2:/home/node/.ivy2"
  snyk/snyk-cli:gradle-4.4 test --org=my-org-name