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feat: add bsf dockerfile digests command
Signed-off-by: hanshal101 <82961842+hanshal101@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| FROM ubuntu@sha256:0b897358ff6624825fb50d20ffb605ab0eaea77ced0adb8c6a4b756513dec6fc | ||
| FROM python@sha256:a6c12ec09f13df9d4b8b4e4d08678c1b212d89885be14b6c72b633bee2a520f4 | ||
| FROM node@sha256:a158d3b9b4e3fa813fa6c8c590b8f0a860e015ad4e59bbce5744d2f6fd8461aa14 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| package dockerfile | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "fmt" | ||
| "os" | ||
| "regexp" | ||
| "strings" | ||
|
|
||
| "github.com/buildsafedev/bsf/cmd/styles" | ||
| "github.com/google/go-containerregistry/pkg/crane" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| var DGCmd = &cobra.Command{ | ||
| Use: "dockerfile digests", | ||
| Short: "Replace Dockerfile image tags with immutable digests", | ||
| Aliases: []string{"dg"}, | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| if len(args) < 1 { | ||
| fmt.Println(styles.HintStyle.Render("hint:", "run `bsf dockerfile digests <Dockerfile>` to replace image tags with digests")) | ||
| os.Exit(1) | ||
| } | ||
|
|
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| dockerfile := args[1] | ||
| file, err := os.Open(dockerfile) | ||
| if err != nil { | ||
| fmt.Printf("Error opening Dockerfile: %v\n", err) | ||
| os.Exit(1) | ||
| } | ||
| defer file.Close() | ||
|
|
||
| scanner := bufio.NewScanner(file) | ||
| re := regexp.MustCompile(`FROM\s+(\S+):(\S+)`) | ||
| var updatedLines []string | ||
|
|
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| for scanner.Scan() { | ||
| line := scanner.Text() | ||
| if matches := re.FindStringSubmatch(line); matches != nil { | ||
| image := matches[1] | ||
| tag := matches[2] | ||
| digest, err := getDigest(image, tag) | ||
| if err != nil { | ||
| fmt.Printf("Error retrieving digest for %s:%s: %v\n", image, tag, err) | ||
| os.Exit(1) | ||
| } | ||
| line = strings.Replace(line, fmt.Sprintf("%s:%s", image, tag), fmt.Sprintf("%s@%s", image, digest), 1) | ||
| } | ||
| updatedLines = append(updatedLines, line) | ||
| } | ||
|
|
||
| if err := scanner.Err(); err != nil { | ||
| fmt.Printf("Error reading Dockerfile: %v\n", err) | ||
| os.Exit(1) | ||
| } | ||
|
|
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| if err := os.WriteFile(dockerfile, []byte(strings.Join(updatedLines, "\n")), 0644); err != nil { | ||
| fmt.Printf("Error writing updated Dockerfile: %v\n", err) | ||
| os.Exit(1) | ||
| } | ||
| fmt.Println("Dockerfile updated with image digests successfully.") | ||
| }, | ||
| } | ||
|
|
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| func getDigest(image, tag string) (string, error) { | ||
| digest, err := crane.Digest(fmt.Sprintf("%s:%s", image, tag)) | ||
| if err != nil { | ||
| return "", fmt.Errorf("failed to get manifest for %s:%s: %w", image, tag, err) | ||
| } | ||
|
|
||
| return digest, nil | ||
| } |
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