Documentation
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Overview ¶
Package dockerfile is the evaluation step in the Dockerfile parse/evaluate pipeline.
It incorporates a dispatch table based on the parser.Node values (see the parser package for more information) that are yielded from the parser itself. Calling newBuilder with the BuildOpts struct can be used to customize the experience for execution purposes only. Parsing is controlled in the parser package, and this division of responsibility should be respected.
Please see the jump table targets for the actual invocations, most of which will call out to the functions in internals.go to deal with their tasks.
ONBUILD is a special case, which is covered in the onbuild() func in dispatchers.go.
The evaluator uses the concept of "steps", which are usually each processable line in the Dockerfile. Each step is numbered and certain actions are taken before and after each step, such as creating an image ID and removing temporary containers and images. Note that ONBUILD creates a kinda-sorta "sub run" which includes its own set of steps (usually only one of them).
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func BuildFromConfig ¶
BuildFromConfig builds directly from `changes`, treating it as if it were the contents of a Dockerfile It will: - Call parse.Parse() to get an AST root for the concatenated Dockerfile entries. - Do build by calling builder.dispatch() to call all entries' handling routines
BuildFromConfig is used by the /commit endpoint, with the changes coming from the query parameter of the same name.
TODO: Remove?
Types ¶
type Archiver ¶
type Archiver interface {
TarUntar(src, dst string) error
UntarPath(src, dst string) error
CopyWithTar(src, dst string) error
CopyFileWithTar(src, dst string) error
IDMappings() *idtools.IDMappings
}
Archiver defines an interface for copying files from one destination to another using Tar/Untar.
type BuildManager ¶
type BuildManager struct {
// contains filtered or unexported fields
}
BuildManager is shared across all Builder objects
func NewBuildManager ¶
func NewBuildManager(b builder.Backend, sg SessionGetter, fsCache *fscache.FSCache, idMappings *idtools.IDMappings) (*BuildManager, error)
NewBuildManager creates a BuildManager
func (*BuildManager) Build ¶
func (bm *BuildManager) Build(ctx context.Context, config backend.BuildConfig) (*builder.Result, error)
Build starts a new build from a BuildConfig
type Builder ¶
type Builder struct {
Stdout io.Writer
Stderr io.Writer
Aux *streamformatter.AuxFormatter
Output io.Writer
// contains filtered or unexported fields
}
Builder is a Dockerfile builder It implements the builder.Backend interface.
type ClientSessionSourceIdentifier ¶
type ClientSessionSourceIdentifier struct {
// contains filtered or unexported fields
}
ClientSessionSourceIdentifier is an identifier that can be used for requesting files from remote client
func NewClientSessionSourceIdentifier ¶
func NewClientSessionSourceIdentifier(ctx context.Context, sg SessionGetter, uuid string) (*ClientSessionSourceIdentifier, error)
NewClientSessionSourceIdentifier returns new ClientSessionSourceIdentifier instance
func (*ClientSessionSourceIdentifier) Key ¶
func (csi *ClientSessionSourceIdentifier) Key() string
Key returns unique key for remote identifier. Requests with same key return same data.
func (*ClientSessionSourceIdentifier) SharedKey ¶
func (csi *ClientSessionSourceIdentifier) SharedKey() string
SharedKey returns shared key for remote identifier. Shared key is used for finding the base for a repeated transfer.
func (*ClientSessionSourceIdentifier) Transport ¶
func (csi *ClientSessionSourceIdentifier) Transport() string
Transport returns transport identifier for remote identifier
type ClientSessionTransport ¶
type ClientSessionTransport struct{}
ClientSessionTransport is a transport for copying files from docker client to the daemon.
func NewClientSessionTransport ¶
func NewClientSessionTransport() *ClientSessionTransport
NewClientSessionTransport returns new ClientSessionTransport instance
func (*ClientSessionTransport) Copy ¶
func (cst *ClientSessionTransport) Copy(ctx context.Context, id fscache.RemoteIdentifier, dest string, cu filesync.CacheUpdater) error
Copy data from a remote to a destination directory.
type ImageProber ¶
type ImageProber interface {
Reset()
Probe(parentID string, runConfig *container.Config) (string, error)
}
ImageProber exposes an Image cache to the Builder. It supports resetting a cache.
type SessionGetter ¶
SessionGetter is object used to get access to a session by uuid
type ShellLex ¶
type ShellLex struct {
// contains filtered or unexported fields
}
ShellLex performs shell word splitting and variable expansion.
ShellLex takes a string and an array of env variables and process all quotes (" and ') as well as $xxx and ${xxx} env variable tokens. Tries to mimic bash shell process. It doesn't support all flavors of ${xx:...} formats but new ones can be added by adding code to the "special ${} format processing" section
func NewShellLex ¶
NewShellLex creates a new ShellLex which uses escapeToken to escape quotes.
func (*ShellLex) ProcessWord ¶
ProcessWord will use the 'env' list of environment variables, and replace any env var references in 'word'.
func (*ShellLex) ProcessWords ¶
ProcessWords will use the 'env' list of environment variables, and replace any env var references in 'word' then it will also return a slice of strings which represents the 'word' split up based on spaces - taking into account quotes. Note that this splitting is done **after** the env var substitutions are done. Note, each one is trimmed to remove leading and trailing spaces (unless they are quoted", but ProcessWord retains spaces between words.
Source Files
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Directories
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| Path | Synopsis |
|---|---|
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Package command contains the set of Dockerfile commands.
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Package command contains the set of Dockerfile commands. |
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Package parser implements a parser and parse tree dumper for Dockerfiles.
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Package parser implements a parser and parse tree dumper for Dockerfiles. |