Update README.md

README.md

@@ -1,24 +1,25 @@
 # Podman ( a Docker alternative with a daemon-less architecture)
-## [Podman](https://docs.podman.io/en/latest/)
-   - 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`.
+## [Podman](https://docs.podman.io/en/latest/)  
+   - 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](https://docs.sylabs.io/guides/4.2/user-guide/) for running containers in HPC environments*
-
-### Docker file structure
-- 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 security
--  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
-
+
+### 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
 ```shell     
 podman build -t .