Is there a way to combine Docker images into 1 container?

Question

I have a few Dockerfiles right now.

One is for Cassandra 3.5, and it is FROM cassandra:3.5

I also have a Dockerfile for Kafka, but t is quite a

Answer 1

I needed docker:latest and python:latest images for Gitlab CI. Here is what I came up with:

FROM ubuntu:latest
RUN apt update
RUN apt install -y sudo
RUN sudo apt install -y docker.io
RUN sudo apt install -y python3-pip
RUN sudo apt install -y python3
RUN docker --version
RUN pip3 --version
RUN python3 --version

After I've build and pushed it to my Docker Hub repo:

docker build -t docker-hub-repo/image-name:latest path/to/Dockerfile
docker push docker-hub-repo/image-name:latest

Don't forget to docker login before push

Hope it helps