Podman ( a Docker alternative with a daemon-less architecture)

Podman

• run, build, share, deploy, & manage containers with ease   
• Python, R, and a basic Linux environments for rapid development   
• syntax is similar to Docker, so it should work with any docker without any issue (replace 'podman' with 'docker')
• file formats supported: OCI, SIF
• The images used in this repo are mostly ubuntu-LTS, which is more reliable and has more up-to-date packages than debian. check out Singularity for running containers in HPC environments

Dockerfile structure

command	description
FROM	pulls a pre-built image <base_image> from docker.io/quay.io
ENV	set environment variables
WORKDIR	set working directory (usually root directory)
USER	create a user with lesser privileges for better securit
COPY	copy files into the container
EXPOSE	expose specific ports to be exposed (port : 8080)
VOLUME	manage volumes for containers
RUN	run commands
ENTRYPOINt	set entrypoint
CMD	set default command to run when container starts

build a container

podman build -t .      
podman build -t pybox -f Py.dockerfile  

for building all images in this repo at once

podman build -t pybox -f Py.dockerfile && podman build -t rbox -f R.dockerfile && podman build -t shbox -f sh.dockerfile && podman build -t bshbox -f bsh.dockerfile     

run podman images in interactive mode

podman run -it ubuntu:latest  

Replace ubuntu:latest with other pre-built official tags found here

Never run into "It works on my machine!" moment