* parse arg commands at the top of dockerfiles
* fix pointer reference bug and remove debugging
* fixing tests
* account for meta args with no value
* don't take fs snapshot if / is the only changed path
* move metaArgs inside KanikoStage
* removing unused property
* check for any directory instead of just /
* remove unnecessary check
I improved handling of the .dockerignore file by:
1. Using docker's parser to parse the .dockerignore and using their
helper functions to determine if a file should be deleted
2. Copying the Dockerfile we are building to /kaniko/Dockerfile so that
if the Dockerfile is specified in .dockerignore it won't be deleted, and
if it is specified in the .dockerignore it won't end up in the final
image
3. I also improved the integration test to create a temp directory with
files to ignore, and updated the .dockerignore to include exclusions (!)
I added a KanikoStage to hold each stage of the Dockerfile along with
information about each stage that would be useful later on.
The new KanikoStage type holds the stage itself, along with some
additional information:
1. FinalStage -- whether the current stage is the final stage
2. BaseImageStoredLocally/BaseImageIndex -- whether the base image for
this stage is stored locally, and if so what the index of the base image
is
3. SaveStage -- whether this stage needs to be saved for use in a future
stage
This is the first part of a larger refactor for building stages, which
will later make it easier to add layer caching.
This change should fix the bug in #294, where kaniko wasn't recognizing
that a stage would be used in a later build and so wasn't saving it as a
tarball.
Each stage of the Dockerfile has a Name and a BaseName (FROM BaseName as
Name), but if a Name isn't specified then it's set to the same value as
BaseName. Our test cases weren't complete enough to catch this
distinction, which is why this bug occurred.
I added more test cases to the unit tests to make sure this fix works.
* adding reproducible test
* newer version of go-containerregistry
* new ImageOptions
* switch reproducible flag to default to false
* small fixes
* update dep
Sharif Elgamal
Priya Wadhwa
Nick Kubala
Jon Johnson