Initial action code

Dockerfile

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+FROM alpine:3.11
+
+COPY entrypoint.sh /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

README.md

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+<p align="center">
+  <a href="https://github.com/net-engine/github-action-repository-sync"><img alt="typescript-action status" src="https://github.com/net-engine/github-action-repository-sync/workflows/build-test/badge.svg"></a>
+</p>
+
+# Git Repository Sync Action
+
+A [GitHub action](https://github.com/features/actions) to push changes to a branch in a current GitHub repository to any remote repository, i.e. another GitHub, GitLab, AWS CodeCommit repository.
+
+Inspired by the following actions
+
+* [wei/git-sync](https://github.com/wei/git-sync)
+* [pixta-dev/repository-mirroring-action](https://github.com/pixta-dev/repository-mirroring-action)
+
+## Inputs
+
+### `who-to-greet`
+
+**Required** The name of the person to greet. Default `"World"`.
+
+
+## Example usage
+
+uses: actions/hello-world-docker-action@v1
+with:
+  who-to-greet: 'Mona the Octocat'

action.yml

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+name: Git Repository Sync
+description: Sync current repository to a remote repository on GitHub, GitLab, AWS CodeCommit, etc.
+author: NetEngine
+inputs:
+  ssh_private_key:
+    description: SSH private key for ssh connection to the target repository
+    required: false
+  source_branch:
+    description: The branch from this repository that you want to push to the remote
+    required: false
+    default: master
+  target_branch:
+    description: The branch from the remote repository that you want to push the source_branch to
+    required: false
+    default: master
+  target_repo_url:
+    description: Target git repository URL
+    required: true
+runs:
+  using: 'docker'
+  image: 'Dockerfile'
+  args:
+    - ${{ inputs.ssh_private_key }}
+    - ${{ inputs.source_branch }}
+    - ${{ inputs.target_branch }}
+    - ${{ inputs.target_repo_url }}

entrypoint.sh

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+#!/bin/sh -l
+
+# Setup SSH
+mkdir ~/.ssh
+echo "$INPUT_SSH_PRIVATE_KEY" > ~/.ssh/id_rsa
+chmod 600 ~/.ssh/id_rsa
+
+git remote add destination "$INPUT_TARGET_REPO_URL"
+git push destination "$INPUT_SOURCE_BRANCH:$INPUT_TARGET_BRANCH" -f