How to set up Vagrant with Docker on Ubuntu 18.04

Overview:

1. Ubuntu 18.04 (bionic)
2. Docker 20.10.17
3. Vagrant 2.2.5

Install Docker:

1. Install prerequisite packages for Docker:

   sudo apt-get install apt-transport-https ca-certificates gnupg-agent software-properties-common
   

2. Add Docker GPG keys:

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   

3. Verify that GPG key is proper:

   sudo apt-key fingerprint 0EBFCD88
   

4. Add Docker repository:

   sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
   

5. Update the repositories:

   sudo apt-get update
   

6. Install Docker:

   sudo apt-get install docker-ce docker-ce-cli containerd.io
   

Install Vagrant:

1. Cd into /tmp folder for package download:

   cd /tmp/
   

2. Download vagrant package file:

   wget https://releases.hashicorp.com/vagrant/2.2.5/vagrant_2.2.5_x86_64.deb
   

3. Download cheksums for verification:

   wget https://releases.hashicorp.com/vagrant/2.2.5/vagrant_2.2.5_SHA256SUMS.sig
   

   wget https://releases.hashicorp.com/vagrant/2.2.5/vagrant_2.2.5_SHA256SUMS
   

4. Import HashiCorp's public key by creating hashicorp.asc file:

   vim hashicorp.asc
   

   HashiCorp's public keys can be found here Copy the key and paste:

   -----BEGIN PGP PUBLIC KEY BLOCK-----
   mQINBGB9+xkBEACabYZOWKmgZsHTdRDiyPJxhbuUiKX65GUWkyRMJKi/1dviVxOX
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   -----END PGP PUBLIC KEY BLOCK-----
   

5. Import the key:

   gpg --import hashicorp.asc
   

6. Verify the files and checksums:

   gpg --verify vagrant_2.2.5_SHA256SUMS.sig vagrant_2.2.5_SHA256SUMS
   

   You should see the following message:
7. Check if the .deb file is secure:

   shasum -a 256 -c vagrant_2.2.5_SHA256SUMS 2>&1 | grep OK
   

   You should see the following message:
8. Install Vagrant:

   sudo dpkg -i vagrant_2.2.5_x86_64.deb
   

9. Check the installation:

   vagrant --version
   

Reference:

1. HashiCorp's public keys
2. Docker's public key
3. Vagrant 2.2.5 download for Ubuntu