Question 1. Understanding docker first run

Run docker with the python:3.12.8 image in an interactive mode, use the entrypoint bash.

What's the version of pip in the image?

• 24.3.1
• 24.2.1
• 23.3.1
• 23.2.1

Answer: 24.3.1

• To run a Docker container with the python:3.12.8 image in interactive mode and set the entrypoint to bash, you can use the following command:

  docker run -it --entrypoint bash python:3.12.8
  

  Here’s what each part does:

  • it: Runs the container in interactive mode (i) and allocates a pseudo-TTY (t), allowing you to interact with the container.
  • -entrypoint bash: Overrides the default entrypoint of the image and sets it to bash, so the container will start with a bash shell.
  • python:3.12.8: Specifies the Docker image to use.

  This will drop you into a bash shell inside the container, where you can execute commands interactively.

• To check the version of pip inside the Docker container using bash, you can run the following command:

  pip --version
  #or
  pip -V
  

  This will display the version of pip installed in the container.

Question 2. Understanding Docker networking and docker-compose

Given the following docker-compose.yaml, what is the hostname and port that pgadmin should use to connect to the postgres database?

services:
  db:
    container_name: postgres
    image: postgres:17-alpine
    environment:
      POSTGRES_USER: 'postgres'POSTGRES_PASSWORD: 'postgres'POSTGRES_DB: 'ny_taxi'ports:
      - '5433:5432'volumes:
      - vol-pgdata:/var/lib/postgresql/data

  pgadmin:
    container_name: pgadmin
    image: dpage/pgadmin4:latest
    environment:
      PGADMIN_DEFAULT_EMAIL: "[email protected]"PGADMIN_DEFAULT_PASSWORD: "pgadmin"ports:
      - "8080:80"volumes:
      - vol-pgadmin_data:/var/lib/pgadmin

volumes:
  vol-pgdata:
    name: vol-pgdata
  vol-pgadmin_data:
    name: vol-pgadmin_data