chore(docker): install git and ca-certificates

Required so Composer can resolve VCS-based dependencies (e.g. forked codex packages) at build time.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -2,6 +2,7 @@ FROM dunglas/frankenphp:1-php8.5
 
 # System Setup
 RUN install-php-extensions mongodb zip
+RUN apt-get update && apt-get install -y --no-install-recommends git ca-certificates && rm -rf /var/lib/apt/lists/*
 
 ARG USER=iblogs
 RUN useradd ${USER} && \