Update README.md

The actions/checkout@v2 action uses a checkout depth of 1 by default.
There is no more need to set it manually.

Dockerfile

@@ -1,12 +1,7 @@
-FROM ubuntu:latest
-
-# Update
-RUN apt-get update
-
-# Install packages
-RUN apt-get -yq install rsync openssh-client
+FROM drinternet/rsync:1.0.1
 
 # Copy entrypoint
-ADD entrypoint.sh /entrypoint.sh
+COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
+
 ENTRYPOINT ["/entrypoint.sh"]

LICENSE

@@ -1,7 +1,7 @@
 MIT License
 
-Copyright (c) 2019 Contention
-Copyright (c) 2019 Burnett01
+Copyright (c) 2019-2020 Contention
+Copyright (c) 2019-2020 Burnett01
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,11 +1,10 @@
 # rsync deployments
 
-Forked from [Contention/rsync-deployments](https://github.com/Contention/rsync-deployments)
+This GitHub Action deploys files in `GITHUB_WORKSPACE` to a remote folder via rsync over ssh. 
 
+Use this action in a CD workflow which leaves deployable code in `GITHUB_WORKSPACE`.
 
-This GitHub Action deploys files in `GITHUB_WORKSPACE` to a folder on a server via rsync over ssh. 
-
-Use this action in a build/test workflow which leaves deployable code in `GITHUB_WORKSPACE`.
+The underlaying base-image of the docker-image is very small (Alpine (no cache)) which results in fast deployments.
 
 ---
 
@@ -48,9 +47,9 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: rsync deployments
-      uses: burnett01/rsync-deployments@2.0
+      uses: burnett01/rsync-deployments@4.1
       with:
         switches: -avzr --delete
         path: src/
@@ -63,19 +62,13 @@ jobs:
 Advanced:
 
 ```
-name: DEPLOY
-on:
-  push:
-    branches:
-    - master
-
 jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: rsync deployments
-      uses: burnett01/rsync-deployments@2.0
+      uses: burnett01/rsync-deployments@4.1
       with:
         switches: -avzr --delete --exclude="" --include="" --filter=""
         path: src/
@@ -89,19 +82,13 @@ jobs:
 For better security, I suggest you create additional secrets for remote_host, remote_port and remote_user inputs.
 
 ```
-name: DEPLOY
-on:
-  push:
-    branches:
-    - master
-
 jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - name: rsync deployments
-      uses: burnett01/rsync-deployments@2.0
+      uses: burnett01/rsync-deployments@4.1
       with:
         switches: -avzr --delete
         path: src/
@@ -114,6 +101,25 @@ jobs:
 
 ---
 
+## Version 3.0
+
+Looking for version 3.0?
+
+Check here: https://github.com/Burnett01/rsync-deployments/tree/3.0
+
+Version 3.0 uses the ``alpine:latest`` base-image directly.<br>
+Consider upgrading to 4.0 that uses a docker-image ``drinternet/rsync:1.0.1`` that is<br>
+based on ``alpine:latest``and heavily optimized for rsync.
+
+## Version 2.0
+
+Looking for version 2.0?
+
+Check here: https://github.com/Burnett01/rsync-deployments/tree/2.0
+
+Version 2.0 uses a larger base-image (``ubuntu:latest``).<br>
+Consider upgrading to 3.0 for even faster deployments.
+
 ## Version 1.0 (EOL)
 
 Looking for version 1.0?
@@ -121,3 +127,12 @@ Looking for version 1.0?
 Check here: https://github.com/Burnett01/rsync-deployments/tree/1.0
 
 Please note that version 1.0 has reached end of life state.
+
+---
+
+## Acknowledgements
+
++ This project is a fork of [Contention/rsync-deployments](https://github.com/Contention/rsync-deployments)
++ Base image [JoshPiper/rsync-docker](https://github.com/JoshPiper/rsync-docker)
+
+

entrypoint.sh

@@ -1,18 +1,17 @@
-#!/bin/bash
+#!/bin/sh
 
+# Start the SSH agent and load key.
+source agent-start "$GITHUB_ACTION"
+echo "$INPUT_REMOTE_KEY" | agent-add
+
+# Add strict errors.
 set -eu
 
-# Set deploy key
-SSH_PATH="$HOME/.ssh"
+# Variables.
+SWITCHES="$INPUT_SWITCHES"
+RSH="ssh -o StrictHostKeyChecking=no -p $INPUT_REMOTE_PORT $INPUT_RSH"
+LOCAL_PATH="$GITHUB_WORKSPACE/$INPUT_PATH"
+DSN="$INPUT_REMOTE_USER@$INPUT_REMOTE_HOST"
 
-# Create .ssh dir if it doesn't exist
-[ -d "$SSH_PATH" ] || mkdir "$SSH_PATH"
-
-# Place deploy_key into .ssh dir
-echo "$INPUT_REMOTE_KEY" > "$SSH_PATH/key"
-
-# Set r+w to user only
-chmod 600 "$SSH_PATH/key"
-
-# Do deployment
-sh -c "rsync $INPUT_SWITCHES -e 'ssh -i $SSH_PATH/key -o StrictHostKeyChecking=no -p $INPUT_REMOTE_PORT $INPUT_RSH' $GITHUB_WORKSPACE/$INPUT_PATH $INPUT_REMOTE_USER@$INPUT_REMOTE_HOST:$INPUT_REMOTE_PATH"
+# Deploy.
+sh -c "rsync $SWITCHES -e '$RSH' $LOCAL_PATH $DSN:$INPUT_REMOTE_PATH"