Development & Programming¶
- Python 3 - High-level interpreted programming language
- Go - Programming language
- Docker - Create, deploy, and run applications using containers
- Docker Compose - Define and run multi-container Docker applications
- Portainer - Lightweight management UI, managing your Docker host or Swarm cluster
- VSCodium - FLOSS version of Microsoft VSCode
How do I run DietPi-Software and install optimised software items?
To install any of the DietPi optimised software items listed below run from the command line:
Choose Browse Software and select one or more items. Finally select
DietPi will do all the necessary steps to install and start these software items.
To see all the DietPi configurations options, review the DietPi Tools section.
Python is a text based interpreted programming language with object oriented programming options for general purpose applications.
You can find Python everywhere in the world of computer programming. For example, Python is the foundation of some of the world’s most popular websites 3, including Reddit, Dropbox, and YouTube, to name a few. The Python web framework Django powers both Instagram and Pinterest.
Currently, Python is 3rd most popular of programming language 4.
The install option explicitly installs only Python 3.
pip3 Python package manager and development headers are included. To use the
pip package manager, a typical usage will be
pip3 install -U <module>.
There are many Python IDE packages available. Following is a short list of well known and widely good accepted IDE packages (alphabetical order):
|Eclipse + Pydev||https://www.eclipse.org and http://pydev.org|
Official documentation, from beginner to advanced: https://www.python.org/doc/
How to Use Python: Your First Steps https://realpython.com/python-first-steps/ Wikipedia: https://wikipedia.org/wiki/Python_(programming_language)
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
Source: By https://golang.org, Creative Commons Attribution 3.0
Go is a compiled, fast and high-performance language intended to be simple and is designed to be easy to read and understand. Go was created at Google by Rob Pike, Robert Griesemer, and Ken Thompson, and it first appeared in Nov 2009.
Go is used by some of the big organizations such as Google, BBC, Uber, Soundcloud, Twitch, Medium, Daily Motion2. Uber has reported better throughput, high performance, latency, and uptime. BBC, the house name in broadcasting the world news, uses it for backend, including crawlers and web scrapers. The build and deployment system of Soundcloud is in Go.
To edit the code you can use an editor of your choice, or use VSCodium. The Go extension available in VSCodium provides rich language support for the Go programming language.
Just to have a taste of it, you could run some commands in Go playground
Checkout also the official tutorial Get started with Go.
We switched to automatic Go version detection. Here is an example:
root@DietPi3:~# go version go version go1.16.3 linux/arm
When the Go package gets uninstalled, the folder
/mnt/dietpi_userdata/gois still kept.
This is the place where packages are installed, custom compilations are run, sources are downloaded etc.
It is especially important to keep
/mnt/dietpi_userdata/goas long as we don’t have a good dependency system that blocks uninstalls of dependencies. Otherwise it would be possible to uninstall Go while OpenBazaar is still installed.
As a side effect, removing
/mnt/dietpi_userdata/gowould mean also removing OpenBazaar.
/mnt/dietpi_userdata/go: This is the place where packages are installed, custom compilations are run, sources are downloaded etc.
This path is what is given in the environment variable GOPATH.
GOPATH is a global setting
In normal Go installations, GOPATH is a user specific environment variable. In DietPi it is global, i.e. all users have the same module cache and all see the same binaries below GOPATH/bin.
/usr/local/go: This is the place where the Go package is installed.
/mnt/dietpi_userdata/go/pkg/mod: This is the path for 3rd party Go packages. The environment variable GOMODCACHE directs to this.
Some common Go commands are:
go version: Prints the installed Go version
go env: Prints the Go internal environment variables (e.g. GOPATH). Can also be used e.g. like
$(go env GOPATH)/bin
go mod tidy <MODULNAME>: Generate a Go module
go help: Start the Go internal help in general, details for commands e.g. via
go help build
dietpi-software reinstall 188
To check the installation, run
Official documentation, references and guided tours of Go programs : https://golang.org/doc
One example source to grub for Go libraries: avelino/awesome-go
In 2013, Docker introduced containers. These are a standardized unit of software that allows developers to isolate their application from the environment. Docker is de facto standard to build and share containerized apps - from single board computers (SBC), to desktop or cloud.
A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries and settings.
Docker logs can be accessed using next command:
journalctl -u docker -u containerd
The location of the Docker configuration files:
Official documentation: https://docs.docker.com/get-started/overview
Configuration file: https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file
For a quick intro, see DietPi Docker Setup on Raspberry Pi 3 B Plus:
Docker Compose is a Docker tool used to define and run multi-container applications. With Compose, you use a
YAML file to create and configure your application’s services from this configuration file.
docker-compose is an excellent tool for development, testing, continuous integration (CI) workflows, and staging environments.
Docker (individual container) vs. Docker-Compose (several containers) - source: A beginner’s guide to Docker
The tool is available soon after the installation. In case you need to upgrade it, here is the command:
sudo pip3 install docker-compose --upgrade
Official documentation: https://docs.docker.com/compose
Getting started: https://docs.docker.com/compose/gettingstarted
Sample apps with Compose: https://docs.docker.com/compose/samples-for-compose/
Release notes: https://docs.docker.com/compose/release-notes/
Portainer simplifies your Docker container management via Portainer web interface. It enables faster deploy of the applications and it gives real time visibility.
The web interface is accessible via port 90021:
- URL =
To update Portainer, simply reinstall it:
dietpi-software reinstall 185
Official documentation: https://documentation.portainer.io
Beginners guide: https://codeopolis.com/posts/beginners-guide-to-portainer/ Source code: portainer/portainer
Open-source license: zlib
VSCodium is a FLOSS version of Microsoft’s Visual Studio code, built directly from the source on GitHub, without branding, tracking, or telemetry.
VSCodium is installed as APT package, hence you can update it by running the following commands:
apt update apt install codium
Documentation (Visual Studio Code): https://code.visualstudio.com/docs
Documentation (VSCodium): https://github.com/VSCodium/vscodium/blob/master/DOCS.md
Source code: VSCodium/vscodium
Logitech Media Server already listened to port
9000, and this is why Portainer has been configured to start using port
9002. For more details on the implementation Portainer in DietPi see the GitHub task: MichaIng/DietPi!3933 ↩