Reproducible build fails

[expiringplatform]

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
• This isn't a feature request or a discussion topic

---

Bug description

When trying to build version 7.2.1 using the instructions from https://github.com/signalapp/Signal-Android/blob/main/reproducible-builds/README.md the build fails with the error show below. A similar looking issue is described in the community forum
The automated pipeline for reproducible builds seems to be failing since some weeks.

Error message:

> Configure project :Signal-Android
fatal: detected dubious ownership in repository at '/project'
To add an exception for this directory, call:

	git config --global --add safe.directory /project

FAILURE: Build failed with an exception.

* Where:
Build file '/project/app/build.gradle.kts' line: 617

* What went wrong:
Process 'command 'git'' finished with non-zero exit value 128

Steps to reproduce

• Clone the repo
• Checkout v7.2.1
• Following the reproducible build instructions build the docker image and run the build

Actual result: The build fails with the above error message
Expected result: The build finishes successfully

Screenshots

Device info

Device: n/a
Android version: n/a
Signal version: 7.2.1

Link to debug log

Full output:
https://gist.github.com/expiringplatform/652befb79f309daee9a26083b26957e1

[ElNatcho]

I have the same issue for version v7.1.3.

However, adding git config --global --add safe.directory /project to the reproducible-builds/Dockerfile seems to work as a workaround for me at the time.

e.g.:

diff --git a/reproducible-builds/Dockerfile b/reproducible-builds/Dockerfile
index 80c01db1bd..90ed823cf3 100644
--- a/reproducible-builds/Dockerfile
+++ b/reproducible-builds/Dockerfile
@@ -32,3 +32,5 @@ RUN yes | sdkmanager --sdk_root="${ANDROID_HOME}" "platforms;${ANDROID_API_LEVEL
 RUN yes | sdkmanager --licenses --sdk_root="${ANDROID_HOME}"
 
 RUN rm -rf ${ANDROID_HOME}/tools
+
+RUN git config --global --add safe.directory /project

[dalamsya50]

I'll be working on solving this issue. Contributing to this open source project for a school assignment.