Laravel Docker Lessons · Lesson 8

Install Composer 2 in the Laravel PHP container, build dependencies from composer.lock and understand Docker vendor volumes and platform checks.

This written tutorial follows the actual lesson-8 source snapshot . The published Urdu video lesson is available alongside this written guide.

Continue from Lesson 7 , or browse the complete blog .

The PHP container now contains Composer 2 and installs PHP dependencies from the committed composer.lock during its image build. A new checkout no longer needs host PHP or host Composer to populate vendor . The existing PHP 8.2-FPM image still supplies the real PDO, PCNTL and MongoDB extensions against which Composer checks requirements.

Complete file checklist before running commands

This lesson modifies Dockerfile, .dockerignore and phpunit.xml. Keep the inherited base Compose and locked Composer files. The full implementation blocks below show their exact contents.…