Cachito support missing WORKDIR & possibly other things

[AntStephenson]

Describe the bug To add support for Cachito to our Go build I added to my image.yaml:

 - name: "rhpam-7/rhpam-kogito-operator"
   version: "7.11"
   from: "registry.access.redhat.com/ubi8/ubi-minimal:latest"
@@ -45,6 +36,11 @@
     configuration:
       container:
         image_build_method: imagebuilder
+        remote_source:
+          repo: https://github.com/kiegroup/rhpam-kogito-operator
+          ref: db4a5d18f5f52a64083d8f1bd1776ad60a46904c
+          pkg_managers:
+            - gomod
         platforms:
           only:
             - x86_64

Despite this (and removing the erroneous go mod download ) it doesn't work. After talking with Luiz he suggested (and from the docs[1]) we are missing a WORKDIR invocation. Plus there is some other stuff in the docs too.

To reproduce See above, and execute our build with cekit --redhat build osbs

Expected behavior I'm guessing the build should use cached artifacts from Cachito, or they should be downloaded from there during the build.

Logs Paste any logs you have, use CEKit verbose output: cekit -v.

Environment information:

• Operating system CentOS 7.9
• CEKit version: 3.10

Additional context I pasted internal links to the failed builds in the CEKit channel

[1] https://source.redhat.com/groups/public/container-build-system/container_build_system_wiki/containers_from_source_multistage_builds_in_osbs

[rnc]

Need to add WORKDIR $REMOTE_SOURCE_DIR/app.

[rnc]

Verify that remote_source is documented properly as well

[rnc]

Original PR : https://github.com/cekit/cekit/pull/665 The remote_source is part of https://osbs.readthedocs.io/en/latest/users.html#fetching-source-code-from-external-source-using-cachito

[rnc]

@AntStephenson I'm closing this as I think it was fixed in #716 and we can make further fixes in #719.