{"id":"9e6ebe21506c03cc","repo":"docker/cli","slug":"failed-to-merge-file-s","errorCode":null,"errorMessage":"failed to merge file %s","messagePattern":"failed to merge file (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"cli/compose/loader/merge.go","lineNumber":51,"sourceCode":"\t\tif services, err := mergeServices(base.Services, override.Services); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge services: %w\", err))\n\t\t} else {\n\t\t\tbase.Services = services\n\t\t}\n\t\tif err := mergo.Map(&base.Volumes, &override.Volumes, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge volumes: %w\", err))\n\t\t}\n\t\tif err := mergo.Map(&base.Networks, &override.Networks, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge networks: %w\", err))\n\t\t}\n\t\tif err := mergo.Map(&base.Secrets, &override.Secrets, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge secrets: %w\", err))\n\t\t}\n\t\tif err := mergo.Map(&base.Configs, &override.Configs, mergo.WithOverride); err != nil {\n\t\t\terrs = append(errs, fmt.Errorf(\"cannot merge configs: %w\", err))\n\t\t}\n\t\tif err := errors.Join(errs...); err != nil {\n\t\t\treturn nil, errors.Join(fmt.Errorf(\"failed to merge file %s\", override.Filename), err)\n\t\t}\n\t}\n\treturn base, nil\n}\n\nfunc mergeServices(base, override []types.ServiceConfig) ([]types.ServiceConfig, error) {\n\tmergeOpts := []func(*mergo.Config){\n\t\tmergo.WithAppendSlice,\n\t\tmergo.WithOverride,\n\t\tmergo.WithTransformers(&specials{m: map[reflect.Type]func(dst, src reflect.Value) error{\n\t\t\treflect.PointerTo(reflect.TypeFor[types.LoggingConfig]()):        safelyMerge(mergeLoggingConfig),\n\t\t\treflect.TypeFor[[]types.ServicePortConfig]():                     mergeSlice(toServicePortConfigsMap, toServicePortConfigsSlice),\n\t\t\treflect.TypeFor[[]types.ServiceSecretConfig]():                   mergeSlice(toServiceSecretConfigsMap, toServiceSecretConfigsSlice),\n\t\t\treflect.TypeFor[[]types.ServiceConfigObjConfig]():                mergeSlice(toServiceConfigObjConfigsMap, toSServiceConfigObjConfigsSlice),\n\t\t\treflect.PointerTo(reflect.TypeFor[types.UlimitsConfig]()):        mergeUlimitsConfig,\n\t\t\treflect.TypeFor[[]types.ServiceVolumeConfig]():                   mergeSlice(toServiceVolumeConfigsMap, toServiceVolumeConfigsSlice),\n\t\t\treflect.TypeFor[types.ShellCommand]():                            mergeShellCommand,\n\t\t\treflect.PointerTo(reflect.TypeFor[types.ServiceNetworkConfig]()): mergeServiceNetworkConfig,","sourceCodeStart":33,"sourceCodeEnd":69,"githubUrl":"https://github.com/docker/cli/blob/e9452d6e785f6e365712b9d71bd7517591773c86/cli/compose/loader/merge.go#L33-L69","documentation":"Error \"failed to merge file %s\" thrown in docker/cli.","triggerScenarios":"Thrown at cli/compose/loader/merge.go:51 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"analyzedSha":"e9452d6e785f6e365712b9d71bd7517591773c86","analyzedAt":"2026-08-01T07:09:22.474Z","schemaVersion":2}