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Installing dependencies for Linux Ubuntu 20.04 or newer

You can install the following required software via the command line (Ctrl + Alt + T).

Python 3

Per this PhoenixNap article for installing Python 3 on Ubuntu 18.04 or 20.04.

Check your verion of python:

python --version

If the revision level is lower than 3.7.x, or Python is not installed, proceed to the next step.

Update and Refresh Repository Links

sudo apt update

Install Supporting Software

sudo apt install software-properties-common

Add Deadsnakes PPA

sudo add-apt-repository ppa:deadsnakes/ppa

Press enter to continue and then refresh the package lists again:

sudo apt update

Install Python 3

sudo apt install python3.8

Verify installation

python --version

This should return (3.8.x).

Psycopg2

PsycoPG2 is an open-source PostgreSQL driver library for Python. Install per this Codevoila article.

Ensure you have lib-pq-dev installed

sudo apt-get install libpq-dev

Install Psycopg2 using apt

sudo apt-get install python3-Psycopg2

Docker

Docker is an open platform for developing, sharing, and running applications. Install Docker from the apt respository per this DevOpsCube article.

Update the apt cache

sudo apt-get update -y

Add the CPG Key

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

Add the Docker apt repository

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

Update the apt cache again

sudo apt-get update -y

Install Docker components

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

Verify installation

sudo docker version

Docker Compose

Docker Compose reads configuration data from the docker-compose.yaml file to spin up a new container in a single command. Install Docker Compose per this DigitalOcean article.

Make a new directory

mkdir -p ~/.docker/cli-plugins/

Download Docker Compose

curl -SL https://github.com/docker/compose/releases/download/v2.3.3/docker-compose-linux-x86_64 -o ~/.docker/cli-plugins/docker-compose

Set permissions so the 'docker compose' command is executable

chmod +x ~/.docker/cli-plugins/docker-compose

Verify installation

docker compose version

This should return v2.3.3

PostgreSQL

Install per this Ubuntu article. Also see this article for more information on configuration, if required.

sudo apt install postgresql