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.
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
Matthew Butler
Systems Development Engineer @ Amazon Web Services
Victor Denisov
Developer
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Matt Butler
Software Engineer @ AWS
Caio Rodrigues
I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures.
I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations.
Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization.
I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems.
My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.**
David Olverson
Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
ISHANTDEEP SINGH
Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems.
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).