Setup exisitng bumpers to use new autobumper

cmd/image-autobumper/Dockerfile

@@ -22,6 +22,6 @@ LABEL io.kyma-project.source=github.com/kyma-project/test-infra/cmd/image-autobu
 # Copy the built Go app from the builder stage
 COPY --from=builder /app/cmd/image-autobumper/main /image-autobumper
 
-RUN apk add --no-cache ca-certificates && \
+RUN apk add --no-cache ca-certificates git && \
     chmod +x /image-autobumper
 ENTRYPOINT ["/image-autobumper"]

cmd/image-autobumper/main.go

@@ -142,12 +142,12 @@ func (c *client) Changes() []func(context.Context) (string, []string, error) {
 }
 
 // PRTitleBody returns the body of the PR, this function runs after each commit
-func (c *client) PRTitleBody() (string, string, error) {
+func (c *client) PRTitleBody() (string, string) {
 	body := generatePRBody(c.images, c.o.Prefixes)
 	if c.o.AdditionalPRBody != "" {
 		body += c.o.AdditionalPRBody + "\n"
 	}
-	return makeCommitSummary(c.o.Prefixes, c.versions), body, nil
+	return makeCommitSummary(c.o.Prefixes, c.versions), body
 }
 
 var rootCmd = &cobra.Command{

cmd/image-detector/main.go

@@ -154,8 +154,8 @@ func (c *client) Changes() []func(context.Context) (string, []string, error) {
 }
 
 // PRTitleBody returns the body of the PR, this function runs after each commit
-func (c *client) PRTitleBody() (string, string, error) {
-	return "Update sec-scanners-config.yaml", "", nil
+func (c *client) PRTitleBody() (string, string) {
+	return "Update sec-scanners-config.yaml", ""
 }
 
 // options is the options for autobumper operations.

cmd/markdown-index/main.go

@@ -34,8 +34,8 @@ func (c *client) Changes() []func(context.Context) (string, []string, error) {
 }
 
 // PRTitleBody returns the body of the PR, this function runs after each commit
-func (c *client) PRTitleBody() (string, string, error) {
-	return "Update index.md", "", nil
+func (c *client) PRTitleBody() (string, string) {
+	return "Update index.md", ""
 }
 
 // options is the options for autobumper operations.

pkg/github/bumper/bumper.go

@@ -64,8 +64,8 @@ type Options struct {
 // manipulating the repo, and provides commit messages, PR title and body.
 type PRHandler interface {
 	// Changes returns a slice of functions, each one does some stuff, and
-	// returns commit message for the changes
-	Changes() []func(context.Context) (string, error)
+	// returns commit message for the changes and list of files that should be added to commit
+	Changes() []func(context.Context) (string, []string, error)
 	// PRTitleBody returns the body of the PR, this function runs after all
 	// changes have been executed
 	PRTitleBody() (string, string)
@@ -212,7 +212,7 @@ func processGitHub(ctx context.Context, o *Options, prh PRHandler) error {
 	// Make change, commit and push
 	var anyChange bool
 	for i, changeFunc := range prh.Changes() {
-		msg, err := changeFunc(ctx)
+		msg, files, err := changeFunc(ctx)
 		if err != nil {
 			return fmt.Errorf("process function %d: %w", i, err)
 		}
@@ -227,6 +227,10 @@ func processGitHub(ctx context.Context, o *Options, prh PRHandler) error {
 			continue
 		}
 
+		if err := gitAdd(files, stdout, stderr); err != nil {
+			return fmt.Errorf("git add: %w", err)
+		}
+
 		anyChange = true
 		if err := gitCommit(o.GitName, o.GitEmail, msg, stdout, stderr, o.Signoff); err != nil {
 			return fmt.Errorf("git commit: %w", err)
@@ -357,10 +361,16 @@ func HasChanges(o *Options) (bool, error) {
 	return hasChanges, nil
 }
 
-func gitCommit(name, email, message string, stdout, stderr io.Writer, signoff bool) error {
-	if err := Call(stdout, stderr, gitCmd, []string{"add", "-A"}); err != nil {
+func gitAdd(files []string, stdout, stderr io.Writer) error {
+	args := []string{"add"}
+	args = append(args, files...)
+	if err := Call(stdout, stderr, gitCmd, args); err != nil {
 		return fmt.Errorf("git add: %w", err)
 	}
+	return nil
+}
+
+func gitCommit(name, email, message string, stdout, stderr io.Writer, signoff bool) error {
 	commitArgs := []string{"commit", "-m", message}
 	if name != "" && email != "" {
 		commitArgs = append(commitArgs, "--author", fmt.Sprintf("%s <%s>", name, email))