docker: Error response from daemon: Conflict
This error matches known, documented patterns with reliable solutions.
Quick Fix (Most Common Solution)
- Remove old container with docker rm
- Use docker run --rm for auto-cleanup
Seeing "docker: Error response from daemon: Conflict"? This error can be frustrating, but it's usually fixable. It typically affects your development workflow or system. Below you'll find clear, step-by-step solutions to resolve this issue.
What This Error Means
A container with that name already exists.
Frequently documented in developer and vendor support forums.
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Common Causes
- Previous container not removed
- Name explicitly set and reused
- Container stopped but exists
How to Fix
- Remove old container with docker rm
- Use docker run --rm for auto-cleanup
- Use unique container names
Last reviewed: June 2026 How we review solutions
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Environment Differences
Why Container Conflict Behaves Differently in Docker vs Local Development
Container Conflict frequently appears only in Docker environments because containers are isolated from the host system — they cannot use the host's DNS, filesystem mounts, or network interfaces without explicit configuration.
The most common Docker-only cause: services communicate by container name (e.g., postgres) on a user-defined network, but the container attempting the connection is on a different network or the default bridge network. On user-defined networks, Docker provides DNS resolution between containers. On the default bridge network (bridge0), it does not. Run docker network ls and docker inspect <container> | grep -i network to verify both containers share a network. A second Docker-specific cause: /etc/hosts entries on the host are not visible inside containers — if you rely on local hostname overrides for development, add them via --add-host in docker run or the extra_hosts key in Compose.Optional follow-up
Some users ask whether saving fixes for recurring errors would be useful when the same issue appears again.
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Frequently Asked Questions
How do I list all containers?
Use docker ps -a to see all containers including stopped.
How do I remove all stopped containers?
Run docker container prune to remove stopped containers.
Related Resources
Also Known As
- Docker container error
- Docker build failure
- Container runtime error
- Docker daemon error
Common Search Variations
- "docker container won't start"
- "docker build error fix"
- "docker image not found"
- "container exited with error"
- "docker daemon not responding"
- "fix docker network error"
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