mirror of https://github.com/docker/cli.git
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
package build
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/moby/patternmatcher"
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"github.com/moby/patternmatcher/ignorefile"
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)
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// ReadDockerignore reads the .dockerignore file in the context directory and
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// returns the list of paths to exclude
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func ReadDockerignore(contextDir string) ([]string, error) {
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var excludes []string
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f, err := os.Open(filepath.Join(contextDir, ".dockerignore"))
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switch {
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case os.IsNotExist(err):
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return excludes, nil
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case err != nil:
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return nil, err
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}
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defer f.Close()
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patterns, err := ignorefile.ReadAll(f)
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if err != nil {
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return nil, fmt.Errorf("error reading .dockerignore: %w", err)
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}
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return patterns, nil
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}
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// TrimBuildFilesFromExcludes removes the named Dockerfile and .dockerignore from
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// the list of excluded files. The daemon will remove them from the final context
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// but they must be in available in the context when passed to the API.
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func TrimBuildFilesFromExcludes(excludes []string, dockerfile string, dockerfileFromStdin bool) []string {
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if keep, _ := patternmatcher.Matches(".dockerignore", excludes); keep {
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excludes = append(excludes, "!.dockerignore")
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}
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// canonicalize dockerfile name to be platform-independent.
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dockerfile = filepath.ToSlash(dockerfile)
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if keep, _ := patternmatcher.Matches(dockerfile, excludes); keep && !dockerfileFromStdin {
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excludes = append(excludes, "!"+dockerfile)
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}
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return excludes
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}
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