podman

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package config
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import (
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	"errors"
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	"fmt"
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	"os"
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	dockerclient "github.com/fsouza/go-dockerclient"
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	"github.com/openshift/imagebuilder"
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)
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// configOnlyExecutor implements the Executor interface that an
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// imagebuilder.Builder expects to be able to call to do some heavy lifting,
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// but it just refuses to do the work of ADD, COPY, or RUN.  It also doesn't
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// care if the working directory exists in a container, because it's really
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// only concerned with letting the Builder's RunConfig get updated by changes
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// from a Dockerfile.  Try anything more than that and it'll return an error.
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type configOnlyExecutor struct{}
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func (g *configOnlyExecutor) Preserve(path string) error {
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	return errors.New("ADD/COPY/RUN not supported as changes")
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}
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func (g *configOnlyExecutor) EnsureContainerPath(path string) error {
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	return nil
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}
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func (g *configOnlyExecutor) EnsureContainerPathAs(path, user string, mode *os.FileMode) error {
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	return nil
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}
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func (g *configOnlyExecutor) Copy(excludes []string, copies ...imagebuilder.Copy) error {
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	if len(copies) == 0 {
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		return nil
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	}
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	return errors.New("ADD/COPY not supported as changes")
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}
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func (g *configOnlyExecutor) Run(run imagebuilder.Run, config dockerclient.Config) error {
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	return errors.New("RUN not supported as changes")
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}
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func (g *configOnlyExecutor) UnrecognizedInstruction(step *imagebuilder.Step) error {
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	return fmt.Errorf("did not understand change instruction %q", step.Original)
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}
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