The Ubuntu 18.04 Build Environment

Bionic LTS Standard is EOL by Canonical, try updating to a newer image. It will be in use in Travis CI for some time more, but it’s time to consider migration of your builds to a newer build environment image.

What This Guide Covers #

This guide provides an overview of the packages, tools, and settings available in the Bionic environment.

Using Ubuntu 18.04 (Bionic Beaver) #

To route your builds to Ubuntu 18.04 LTS, Bionic, add the following to your .travis.yml:

dist: bionic

Environment Common to All Ubuntu 18.04 Images #

All Ubuntu 18.04 builds include the following versions of Docker: version control software, compilers, and language support. All preinstalled software not provided by the distro is installed from an official release—either a prebuilt binary, if available, or a source release built with default options.

Version Control #

Compilers and Build Toolchain #

Docker and Container Tools #

Ruby Support #

• Pre-installed Ruby:
  • ruby 3.3.5
• Other Ruby versions (e.g., 2.7.x, 3.1.x) can be installed during build time.

Python Support #

• Supported Python versions: 3.6 or higher.

The following Python versions are directly callable:

JavaScript and Node.js Support #

• For builds specifying language: node_js, nvm is automatically updated to the latest version at build time.
• The default Node.js version available on the machine is:
  • v16.15.1
• Additional Node.js versions are available through nvm if configured.

Go Support #

• Pre-installed Go:
  • go version go1.23.6 linux/amd64
    Additional Go versions can be installed during build time by specifying the language version with the go: key.

JVM (Clojure, Groovy, Java, Scala) Support #

• Pre-installed JVMs:
  • Default Java:
    • openjdk version "11.0.21" 2023-10-17 LTS
• Other JDKs, including Oracle’s, can be acquired if available by specifying the jdk key.
• The following JVM tooling is preinstalled:

Perl Support #

• The default Perl version on Ubuntu 18.04 is provided by the system.
• Additional Perl versions can be installed using the perl: key.
• Tools like TAP::Harness and cpanm are also available.

PHP Support #

• For dynamic runtime selection, phpenv is available.
• The preinstalled PHP version on this image is:
  • PHP 7.2.27 (CLI)
• If a different version is required, it can be installed during the build.

Extensions for PHP 7.2 and Higher #

The following extensions are preinstalled for PHP builds:

• apcu.so
• memcached.so (Not preinstalled for > PHP8.0)
• mongodb.so
• amqp.so
• zmq.so
• xdebug.so
• redis.so

Note: With the exception of xdebug, these extensions are not enabled by default.

Databases and Services #

The following services and databases are preinstalled but do not run by default. To use any in your build, add the service to your .travis.yml:

Android Support #

For Android builds, the environment provides comprehensive support with the following pre-installed components:

• Android SDK Components – Installed components include:
  • tools
  • platform-tools
  • build-tools;30.0.0
  • platforms;android-30
  • extras;google;google_play_services
  • extras;google;m2repository
  • extras;android;m2repository

To use Android, specify language: android in your .travis.yml and refer to the Android Build Environment Guide for additional configuration details.

Other Ubuntu Linux Build Environments #

For details on other Ubuntu Linux build environments available on Travis CI, please refer to the Ubuntu Linux overview page. ```