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package v1
import (
"time"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
const DockerOCIImageMediaType = "application/vnd.docker.container.image.v1+json"
// DockerOCIImage is a ocispec.Image extended with Docker specific Config.
type DockerOCIImage struct {
ocispec.Image
// Shadow ocispec.Image.Config
Config DockerOCIImageConfig `json:"config,omitempty"`
}
// DockerOCIImageConfig is a ocispec.ImageConfig extended with Docker specific fields.
type DockerOCIImageConfig struct {
ocispec.ImageConfig
DockerOCIImageConfigExt
}
// DockerOCIImageConfigExt contains Docker-specific fields in DockerImageConfig.
type DockerOCIImageConfigExt struct {
Healthcheck *HealthcheckConfig `json:",omitempty"` // Healthcheck describes how to check the container is healthy
OnBuild []string `json:",omitempty"` // ONBUILD metadata that were defined on the image Dockerfile
Shell []string `json:",omitempty"` // Shell for shell-form of RUN, CMD, ENTRYPOINT
}
// HealthcheckConfig holds configuration settings for the HEALTHCHECK feature.
type HealthcheckConfig struct {
// Test is the test to perform to check that the container is healthy.
// An empty slice means to inherit the default.
// The options are:
// {} : inherit healthcheck
// {"NONE"} : disable healthcheck
// {"CMD", args...} : exec arguments directly
// {"CMD-SHELL", command} : run command with system's default shell
Test []string `json:",omitempty"`
// Zero means to inherit. Durations are expressed as integer nanoseconds.
Interval time.Duration `json:",omitempty"` // Interval is the time to wait between checks.
Timeout time.Duration `json:",omitempty"` // Timeout is the time to wait before considering the check to have hung.
StartPeriod time.Duration `json:",omitempty"` // The start period for the container to initialize before the retries starts to count down.
StartInterval time.Duration `json:",omitempty"` // The interval to attempt healthchecks at during the start period
// Retries is the number of consecutive failures needed to consider a container as unhealthy.
// Zero means inherit.
Retries int `json:",omitempty"`
}
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