Configure Docker on Cloud9

Your Cloud9 environment comes prebuilt with a version of Docker that doesn’t have the features that we will need for this workshop. Please follow the steps below to install and verify that you have the correct version

Set up Docker CE installer script:

  • Create a file called to install the latest release of Docker CE:

    $ touch && chmod +x
  • Double click on the file bar on the left and copy in the script below. Make sure to save it.

    sudo apt-get remove docker docker-engine containerd runc
    sudo apt-get update -y
    sudo apt-get install -y apt-transport-https ca-certificates curl gnupg lsb-release jq
    sudo curl -fsSL | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
    sudo echo "deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null    
    sudo apt-get update -y
    sudo apt-get install -y docker-ce docker-ce-cli
    docker image prune -af
    docker version

Run installer script

  • Going back to the terminal, run using the command bellow.

    $ ./

Verify successful installation

You should see something similar to the following at the end of the output from the above script:

Client: Docker Engine - Community
 Version:           20.10.6
 API version:       1.41
 Go version:        go1.13.15
 Git commit:        370c289
 Built:             Fri Apr  9 22:46:01 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
  Version:          20.10.6
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.13.15
  Git commit:       8728dd2
  Built:            Fri Apr  9 22:44:13 2021
  OS/Arch:          linux/amd64
  Experimental:     false
  Version:          1.4.4
  GitCommit:        05f951a3781f4f2c1911b05e61c160e9c30eaa8e
  Version:          1.0.0-rc93
  GitCommit:        12644e614e25b05da6fd08a38ffa0cfe1903fdec
  Version:          0.19.0
  GitCommit:        de40ad0

Authenticate Cloud9 with Docker Hub

In Module 1 you’ll push container images to Docker Hub. Log in to Docker Hub by running the following command:

docker login -u $DockerId

Enter your password when prompted.

If you’re using 2-Factor Authentication with Docker Hub, generate an API Token and use that in place of your password.

Check Docker scan plugin version

This workshop requres a minium of v0.8.0 of the Docker “Scan” plugin, run the following to determine which version got installed:

docker scan --version

Since this is the first time you are using the docker scan command on this installation, you will be prompted to consent to using Snyk. Simply press “Y” to accept Snyks terms of use.

Docker Scan relies upon access to Snyk, a third party provider, do you consent to proceed using Snyk? (y/N)

Next you should see something similar to the following:

Version:    v0.8.0
Git commit: 35651ca
Provider:   Snyk (1.563.0 (standalone))

If the first line has an older/lower version than v0.8.0 then run the following commands to upgrade the plugin:

mkdir -p ~/.docker/cli-plugins
mkdir -p ~/.docker/cli-plugins && \
curl -L -s -S -o ~/.docker/cli-plugins/docker-scan &&\
chmod +x ~/.docker/cli-plugins/docker-scan

Configure Snyk account token

Authenticate Docker Scan to Snyk by referencing the Environment Variable declared earlier.

docker scan --login --token $SNYK_TOKEN

You have now completed all the steps necessary to go through the workshop on your Cloud9 workspace.