DevOps

Overview “Error response from daemon: invalid reference format” means Docker parsed an image reference (repository[:tag] or @digest) that does not match the required syntax. This appears in commands like docker run, pull, build -t, tag,......

Overview Symptom: running a Docker command as a non-root user returns an error like: got permission denied while trying to connect to the Docker socket at unix:///var/run/docker.sock Root cause: your process cannot read/write the Docker......

Overview You see: Cannot connect to the Docker daemon: permission denied (are you in the docker group?) This usually means one of: Docker daemon is not running. Your user lacks permission to access the Docker socket......

Overview You see this when the Docker CLI cannot reach the Docker daemon (dockerd). Typical message: error during connect: this may indicate the docker daemon is not running The fix is to start the daemon (or Docker Desktop), ensure the......

What this error means The error “no matching manifest for linux/amd64 (or arm64) in the manifest list entries” appears when your Docker daemon requests an image for your host platform, but the image registry does not have a compatible......

Overview The error manifest unknown appears when a registry cannot find the requested manifest by tag or digest. Common causes include mistyped tags, missing architectures, private image permissions, and case or namespace mismatches. This......

What this error means Docker prints: pull access denied for <image>, repository does not exist or may require docker login. This usually indicates one of: The image name or tag is wrong (typo, wrong registry/namespace, missing......

Overview The error "denied: requested access to the resource is denied" occurs when the registry blocks your push or pull. It typically means one of: You are not authenticated to the registry or using the wrong account. The......

Overview Docker prints 'Error response from daemon: No such image: <name>' when the daemon cannot find the referenced image locally and cannot pull it (or you pointed at the wrong name/tag/digest). This guide shows quick fixes,......

Overview Docker prints "Error response from daemon: No such container" when the target container name or ID does not match any container visible to the current Docker context/daemon. Common causes include typos, removed......

What the error means Docker ensures container names are unique per daemon. The error "Error response from daemon: conflict: container name is already in use" occurs when you try to create a container with a name that already......

What this error means Error: "Error response from daemon: client is newer than server (or server API too old)" The Docker CLI and Docker Engine (daemon) talk via a versioned HTTP API. This error occurs when the CLI attempts to......