Update README with fork explanation and OpenSSL fix details

README.md

@@ -1,19 +1,61 @@
-# github-action-push-to-another-repository
+# GitHub Action: Push to Another Repository (Fixed Fork)
 
-> [!WARNING]
+## Why This Fork Exists
-> TL;DR: this repository is not maintained for any new development. I plan to
-> fix issues if they arise due to changes on GitHub, to minimise disruption of
-> existing usage.
->
-> My circumstances changed since I started the GitHub Action in 2020. I am not
-> able to add functionality to it or fix issues.
->
-> The action is 175 lines of shell script. Feel free to fork it and modify it
-> for your own use case.
->
-> If you create a fork that might replace this one, I will add a note in the
-> documentation and the README.md. Please, open an issue and I will do it.
 
-See the extensive documentation in https://cpina.github.io/push-to-another-repository-docs/ (includes examples, FAQ, troubleshooting, etc.).
+This is a fork of [cpina/github-action-push-to-another-repository](https://github.com/cpina/github-action-push-to-another-repository) created to fix a critical OpenSSL version mismatch issue that was causing deployment failures.
 
-GitHub repository of the documentation: https://github.com/cpina/push-to-another-repository-docs
+## What Was Changed
+
+### OpenSSL Version Mismatch Fix
+
+**Problem**: The original action was failing with the error:
+```
+OpenSSL version mismatch. Built against 3050003f, you have 30500010
+```
+
+**Root Cause**: The Alpine Linux base image was using inconsistent OpenSSL versions between the container's SSH client and the system's OpenSSL library.
+
+**Solution**: Updated the Dockerfile to:
+1. Pin Alpine to version 3.20 for consistency
+2. Explicitly install the `openssl` package alongside other dependencies
+3. Update package index before installation
+
+### Changes Made
+
+**Before**:
+```dockerfile
+FROM alpine:latest
+RUN apk add --no-cache git git-lfs openssh-client
+```
+
+**After**:
+```dockerfile
+FROM alpine:3.20
+RUN apk update && apk add --no-cache git git-lfs openssh-client openssl
+```
+
+## Usage
+
+Use this fork in your GitHub Actions workflows:
+
+```yaml
+- name: Push to another repository
+  uses: Play-Perfect/github-action-push-to-another-repository@main
+  with:
+    source-directory: 'output'
+    destination-github-username: 'your-username'
+    destination-repository-name: 'your-repo'
+    user-email: your-email@example.com
+    target-branch: main
+  env:
+    SSH_DEPLOY_KEY: ${{ secrets.SSH_DEPLOY_KEY }}
+```
+
+## Documentation
+
+For complete usage documentation, examples, and troubleshooting, refer to the original documentation:
+https://cpina.github.io/push-to-another-repository-docs/
+
+## Compatibility
+
+This fork maintains full compatibility with the original action's API and parameters. It's a drop-in replacement that simply fixes the OpenSSL version mismatch issue.