Function normalizeNetworks

loader/normalize.go:168–216

(dict map[string]any)

}

func normalizeNetworks(dict map[string]any) {
	var networks map[string]any
	if n, ok := dict["networks"]; ok {
		networks = n.(map[string]any)
	} else {
		networks = map[string]any{}
	}

	// implicit `default` network must be introduced only if actually used by some service
	usesDefaultNetwork := false

	if s, ok := dict["services"]; ok {
		services := s.(map[string]any)
		for name, se := range services {
			service := se.(map[string]any)
			if _, ok := service["provider"]; ok {
				continue
			}
			if _, ok := service["network_mode"]; ok {
				continue
			}
			if n, ok := service["networks"]; !ok {
				// If none explicitly declared, service is connected to default network
				service["networks"] = map[string]any{"default": nil}
				usesDefaultNetwork = true
			} else {
				net := n.(map[string]any)
				if len(net) == 0 {
					// networks section declared but empty (corner case)
					service["networks"] = map[string]any{"default": nil}
					usesDefaultNetwork = true
				} else if _, ok := net["default"]; ok {
					usesDefaultNetwork = true
				}
			}
			services[name] = service
		}
		dict["services"] = services
	}

	if _, ok := networks["default"]; !ok && usesDefaultNetwork {
		// If not declared explicitly, Compose model involves an implicit "default" network
		networks["default"] = nil
	}

	if len(networks) > 0 {
		dict["networks"] = networks
	}
}

func resolve(a any, fn func(s string) (string, bool), keepEmpty bool) (any, bool) {
	switch v := a.(type) {