make sure workdir is owned by autopilot user (#275)

* make sure workdir is owned by autopilot user
* added clearer errors for `generateManifests`

Dockerfile

@@ -40,7 +40,7 @@ RUN make local DEV_MODE=false
 ### Run
 FROM alpine:3.15 as autopilot
 
-WORKDIR /go/src/github.com/argoproj-labs/argocd-autopilot
+WORKDIR /home/autopilot
 
 RUN apk -U add --no-cache git
 
@@ -50,6 +50,7 @@ COPY --from=base /etc/passwd /etc/passwd
 COPY --from=base /etc/group /etc/group
 COPY --chown=autopilot:autopilot --from=autopilot-build /go/src/github.com/argoproj-labs/argocd-autopilot/dist/* /usr/local/bin/argocd-autopilot
 
+RUN chown -R autopilot:autopilot /home/autopilot
 USER autopilot:autopilot
 
 ENTRYPOINT [ "argocd-autopilot" ]

pkg/application/application.go

@@ -507,27 +507,27 @@ func fixResourcesPaths(k *kusttypes.Kustomization, newKustDir string) error {
 var generateManifests = func(k *kusttypes.Kustomization) ([]byte, error) {
 	td, err := ioutil.TempDir(".", "auto-pilot")
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed creating temp dir: %w", err)
 	}
 	defer os.RemoveAll(td)
 
 	absTd, err := filepath.Abs(td)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed getting abs path for \"%s\": %w", td, err)
 	}
 
 	if err = fixResourcesPaths(k, absTd); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed fixing resources paths: %w", err)
 	}
 
 	kyaml, err := yaml.Marshal(k)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed marshaling yaml: %w", err)
 	}
 
 	kustomizationPath := filepath.Join(td, "kustomization.yaml")
 	if err = ioutil.WriteFile(kustomizationPath, kyaml, 0400); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed writing file to \"%s\": %w", kustomizationPath, err)
 	}
 
 	log.G().WithFields(log.Fields{
@@ -541,7 +541,7 @@ var generateManifests = func(k *kusttypes.Kustomization) ([]byte, error) {
 	fs := filesys.MakeFsOnDisk()
 	res, err := kust.Run(fs, td)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("failed running kustomization: %w", err)
 	}
 
 	return res.AsYaml()