Update README tools description

Signed-off-by: Arthur Diniz <arthurbdiniz@gmail.com>

README.md

@@ -4,15 +4,27 @@
 
 ## Tools
 
-- Docker: useful when doing Docker in Docker (DinD).
-- docker-compose
-- make
-- zip
+### Docker & docker-compose
+
+What would be a musketeers image without Docker and Compose? This image is based on [Docker image](https://hub.docker.com/r/_/docker/) and has docker-compose installed. This allows you to access Docker in Docker (DinD).
+
+### make
+
+The [3 Musketeers]() pattern suggests a `make target` to call a `make _target` using Compose. However, `make` would often be in big images like [Golang stretch](https://hub.docker.com/_/golang/) and not in small ones like [Alpine](https://hub.docker.com/_/alpine/). Not every project needs big images.
+
+### zip
+
+Another suggested pattern is to zip your dependencies. Even big images like [Golang stretch](https://hub.docker.com/_/golang/) does not include zip. It does include `tar` which you can use but sometimes a zip file is required like when deploying your Lambda function to AWS.
+
+### Other handy tools
+
 - curl
 - git
 - openssl
 - bash
 - envsubst
+- python3
+- pip3
 
 ## Usage