Claude Code
deployment
Docker Build Fails Due to Dependency Conflicts
Docker build succeeds locally but fails in CI/CD pipeline with dependency resolution errors. The Dockerfile installs system packages that conflict with application dependencies, or transitive dependencies pull incompatible versions.
This often only appears in CI/CD because local Docker daemon caches layers, masking the real issue.
Error Messages You Might See
ERROR: pip's dependency resolver does not currently take into account...
conflicting versions for module
Package not found in base image
Build failed: E: Unable to locate package
Common Causes
- System package versions in Dockerfile conflict with application requirements
- Multi-stage build doesn't properly isolate dependencies between stages
- Package manager (npm, pip) not pinning minor versions, pulls breaking versions
- Base image updated, containing incompatible tool versions
- Dockerfile doesn't use --no-cache flag, using stale cached layers in CI
How to Fix It
Pin exact versions in package managers and Dockerfile. Use specific base image versions (ubuntu:22.04 not ubuntu:latest). Separate build and runtime dependencies. Use docker build --no-cache in CI. Test Dockerfile on clean machine without cache. Use docker buildx to build on multiple architectures simultaneously.
Real developers can help you.
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Nam Tran
10 years as fullstack developer
MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
Pratik
SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
https://blog.vtemian.com/
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
Bastien Labelle
Full stack dev w/ 20+ years of experience
prajwalfullstack
Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help
Basel Issmail
’m a Senior Full-Stack Developer and Tech Lead with experience designing and building scalable web platforms. I work across the full development lifecycle, from translating business requirements into technical architecture to delivering reliable production systems.
My work focuses on modern web technologies, including TypeScript, Angular, Node.js, and cloud-based architectures. I enjoy solving complex technical problems and helping teams turn product ideas and prototypes into working platforms that can grow and scale.
In addition to development, I often collaborate closely with product managers, business analysts, designers, and QA teams to ensure that solutions align with both technical and business goals.
I enjoy working with startups and product teams where I can contribute both as a hands-on engineer and as a technical partner in designing and delivering impactful software.
Milan Surelia
Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems.
Expertise:
💡 Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web.
🖋️ Sharing insights through technical writing, blogging, and open-source contributions.
🤝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences.
Notable Achievements:
🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX.
🚀 Launched Compose101 — a Jetpack Compose starter kit to speed up Android development.
🌟 Open source contributions on Github & StackOverflow for Flutter & Dart
🎖️ Worked on improving app performance and user experience with smart solutions.
Milan is always happy to connect, work on new ideas, and explore the latest in technology.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How to debug Docker build failures locally?
Run: docker build --no-cache --progress=plain . 2>&1 | tee build.log. No cache prevents cached layers from hiding issues.
Should base images have specific versions?
Yes. Use ubuntu:22.04 or python:3.11-slim not :latest. Latest causes non-deterministic builds.
When should dependencies be pinned?
Always pin in production builds. In development, allow minor version updates. Use lock files (package-lock.json, poetry.lock).