Welcome to microCI

microCI is a powerful tool designed to streamline the creation of continuous-integration pipelines by generating portable, auditable scripts for executing tasks in Docker containers. This ensures that every step in the process is fully reproducible across various environments:

• Developer's machines
• Servers for automatic builds after commits
• Servers for deployment to production

With microCI, the same tool, free of dependencies, can be used seamlessly in both development and production environments. For complete documentation, visit microci.dev.

The complete documentation can be found at microci.dev.

On the desktop

Using microCI on the developer's desktop is very simple:

microCI | bash

In the above command, microCI reads a .microCI.yml file containing the description of the pipeline steps and generates a script for executing these steps. This script is written to standard output and can be chained with other tools or passed to a bash interpreter for execution.

A file called .microCI.log is generated with all messages, warnings, errors from all executed commands and can be analyzed to resolve any problems that may occur.

On the server

To run on the server, it is sufficient to expose webhooks that, when triggered, execute microCI in the respective project folders.

Minimum requirements

• A properly configured Docker environment
• Bash shell
• jq and yq utilities

Installation

The installation is equally simple, just copy the executable to a folder in the PATH. To remove the microCI from the system delete the file copied to the PATH.

sudo curl -fsSL https://github.com/geraldolsribeiro/microci/releases/latest/download/microCI \
  -o /usr/bin/microCI
sudo chmod 755 /usr/bin/microCI

Docker Container

You can use any Docker container for execution, both public ones from Docker HUB and those you develop internally.

Integration with github, gitlab, ...

The simplest and safest way to use microCI to read from or write to repositories are to access them through an SSH key.

To do

Below are some features that may be present in the next releases.

• create deb package
• create rpm package
• pass current user to container to avoid generating files as root in the working directory
• display error message from the failed step
• variable substitution in steps
• use of environment variables and secrets configured on the server
• create a Docker image from a git repository

Debian dependencies

For building standalone microCI binary the following dependencies should be installed:

sudo apt install gettext clang-format libspdlog-dev libfmt-dev libyaml-cpp-dev libssl-dev libcrypto++-dev

Docker private repository

In some cases, running a private registry without SSL is necessary to add the IP of the registry server to the insecure-registries section of the /etc/docker/daemon.json file.

Example:

{
	"insecure-registries": ["11.22.33.44:5000", "192.168.1.1:5000"]
}

Versions

• 0.40.0 Ported to MacOS
• 0.39.0 Bugfixes and minor code refactor
• 0.38.0 Add option --update-dev to use development version
• 0.37.0 Execute Nth step; List steps; bugfixes
• 0.36.0 Allows to run devices inside the container without the --privileged flag
• 0.35.0 Plugin vhdl-format
• 0.34.0 Plugin Doxygen
• 0.33.0 Global environment file parsing
• 0.32.0 Integration config file generation
• 0.31.0 Plugin template
• 0.30.0 Plugin pikchr
• 0.29.0 Plugin docmd
• 0.28.0 Translation support added
• 0.27.0 Plugin pandoc
• 0.26.3 Update clang-tidy
• 0.26.0 Offline mode
• 0.25.6 Plugin git_publish with branch selection support (p.e. gh-pages)
• 0.24.0 Plugin docker_build
• 0.23.0 Plugin fetch download from GitHub (advanced)
• 0.22.0 Plugin fetch download from GitHub (folder)
• 0.21.0 Plugin flawfinder
• 0.20.0 Docker image intmain/microci_clang
• 0.19.0 Documentation with intmain/docmd
• 0.18.0 Plugin minio
• 0.17.0 Plugin skip; Execution status
• 0.16.1 Plugin refactoring; Default execution as non-root
• 0.15.2 Plugin fetch URL and gitlab folder
• 0.14.1 Plugin beamer
• 0.13.0 Docker network configuration
• 0.12.0 Plugins clang-format and junit2html
• 0.11.1 Discord channel notification
• 0.10.1 Multiple template added
• 0.9.0 Plugin plantuml
• 0.8.0 Plugin clang-tidy
• 0.7.0 Plugin cppcheck
• 0.6.1 Plugin git_publish
• 0.5.0 Volume mounting; SSH key copy
• 0.4.0 Building microCI by microCI
• 0.3.0 Configuration files creation
• 0.2.0 Plugin mkdocs
• 0.1.0 Plugin bash and git_deploy
• 0.0.1 Proof of concept/Initial version

License

MIT License

Copyright (c) 2022-2025 Geraldo Luis da Silva Ribeiro

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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.