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fix: keep track of the source image when building an app via git:from-image

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This change fixes issues with ps:rebuild not working as expected - essentially ignoring files in the repo - as well as adds tests.

Closes #5518
This commit is contained in:
Jose Diaz-Gonzalez
2022-12-18 17:57:24 -05:00
parent 654939afa7
commit c3c6e2174a
9 changed files with 171 additions and 10 deletions
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12
docs/deployment/methods/git.md
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@@ -159,6 +159,18 @@ dokku git:from-image node-js-app dokku/node-js-getting-started:latest "Camila" "
If the image is a private image that requires a docker login to access, the `registry:login` command should be used to log into the registry. See the [registry documentation](/docs/advanced-usage/registry-management.md#logging-into-a-registry) for more details on this process.
Building an app from an image will result in the following files being extracted from the source image (with all custom paths specified for each file being respected):
- nginx.conf.sigil
- Procfile
In the case where the repository is later modified to manually add any of the above files and deployed via `git push`, the files will still be extracted from the initial source image. To avoid this, please clear the `source-image` git property. It will be set back to the original source image on any subsequent `git:from-image` calls.
```shell
# sets an empty value
dokku git:set node-js-app source-image
```
Finally, certain images may require a custom build context in order for `ONBUILD ADD` and `ONBUILD COPY` statements to succeed. A custom build context can be specified via the `--build-dir` flag. All files in the specified `build-dir` will be copied into the repository for use within the `docker build` process. The build context _must_ be specified on each deploy, and is not otherwise persisted between builds.
```shell