diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..336477d
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,47 @@
+name: test
+on: [push]
+jobs:
+  test-example:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          branch: test-example-published-files
+          source-dir: test
+          files-and-dirs: 'a.txt b.txt some_dir "file with space.txt" "directory with space"'
+  test-simple:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          branch: test-simple-published-files
+          files-and-dirs: README.md
+  test-complex:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          github-token: ${{ secrets.PAT }}
+          github-actor: antaljanosbenjamin
+          github-repository: antaljanosbenjamin/test-repository
+          branch: test-complex-published-files
+          source-dir: test
+          files-and-dirs: 'a.txt ${{ github.workspace }}/test/b.txt some_dir other_dir/e.txt "file with space.txt" "directory with space"'
+          author-name: 'Test Author'
+          author-email: author+email@noreply.test.com
+          commit-message: 'Some very long commit message that uses build number and hashmark #${{ github.run_number }}'
+  test-source-dir-with-space:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ./
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          branch: test-source-dir-with-space-published-files
+          source-dir: test/directory with space
+          files-and-dirs: d.txt
diff --git a/README.md b/README.md
index 53edf10..ed699cd 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,53 @@
-# single-commit-pusblish
-Publishes files to the specified branch in a single commit with force push to erase history
+# Single commit publish
+This action can be used to publish files to the specified branch of a Github repository in a single commit with *force push to erase history*.
+
+## Inputs
+
+In general the `source-dir`, `files-and-dirs`, `author-name` and `commit-message` parameters can contain values with spaces, but for `files-and-dirs` such paths must be escaped by using double quotes. For the exact usage please check the [example](#example-usage).
+
+### `github-token` (required)
+GitHub token to use for push operation.
+
+### `github-actor`
+GitHub username to use for push operation. Defaults to `${{ github.actor }}`.
+### `github-repository`
+The GitHub repository to where the files should be published in `<username/repo>` format. Defaults to `${{ github.repository }}`.
+
+### `branch` (required)
+The branch to where the files should be published.
+
+### `source-dir`
+The source directory that contains all the files and directories that are going to be published. The directory structure inside this folder is going to be kept for the published files and directories. Defaults to `${{ github.workspace }}`.
+
+### `files-and-dirs` (required)
+List of paths (relative or absolute) of the files and directories to publish. They must be inside the source directory. The directory structure relative to source directory is kept for publishing.
+
+### `author-name`
+The name that will appear in the commit. Defaults to `github-actions`.
+
+### `author-email`
+The email that will appear in the commit. Defaults to `github-actions@noreply.github.com`.
+
+### `commit-message`
+The commit message that will appear in the commit. Defaults to `"Publish from #${{ github.run_number }}"`.
+
+## Example usage
+```
+name: test
+on: [push]
+jobs:
+  test-example:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: 'cd test'
+        shell: bash
+      - uses: antaljanosbenjamin/single-commit-publish@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          branch: test-example-published-files
+          source-dir: test
+          files-and-dirs: 'a.txt b.txt some_dir "file with space.txt" "directory with space"'
+```
+
+For further examples check the [test workflow](.github/workflows/test.yml).
\ No newline at end of file
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..7d42f27
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,42 @@
+name: 'Single commit publish'
+description: 'Publishes files to the specified branch in a single commit with force push to erase history.'
+inputs:
+  github-token:
+    description: 'GitHub token to use for push operation.'
+    required: true
+  github-actor:
+    description: 'GitHub username to use for push operation.'
+    required: false
+    default: ${{ github.actor }}
+  github-repository:
+    description: 'The GitHub repository to where the files should be published in <username/repo> format.'
+    required: false
+    default: ${{ github.repository }}
+  branch:
+    description: 'The branch to where the files should be published.'
+    required: true
+  source-dir:
+    description: 'The source directory that contains all the files and directories that are going to be published. The directory structure inside this folder is going to be kept for the published files and directories.'
+    required: false
+    default: ${{ github.workspace }}
+  files-and-dirs:
+    description: 'List of paths (relative or absolute) of the files and directories to publish. They must be inside the source directory. The directory structure relative to source directory is kept for publishing.'
+    required: true
+  author-name:
+    description: 'The name that will appear in the commit.'
+    required: false
+    default: github-actions
+  author-email:
+    description: 'The email that will appear in the commit.'
+    required: false
+    default: github-actions@noreply.github.com
+  commit-message:
+    description: 'The commit message that will appear in the commit.'
+    required: false
+    default: 'Publish from #${{ github.run_number }}'
+runs:
+  using: composite
+  steps:
+    - run: 'python3 ${{ github.action_path }}/main.py --github-token ${{ inputs.github-token }} --github-actor ${{ inputs.github-actor }} --github-repository ${{ inputs.github-repository }} --branch ${{ inputs.branch }} --files-and-dirs ${{ inputs.files-and-dirs }} --author-name "${{ inputs.author-name }}" --author-email "${{ inputs.author-email }}" --commit-message "${{ inputs.commit-message }}"'
+      shell: bash
+      working-directory: ${{ inputs.source-dir }}
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100755
index 0000000..598a251
--- /dev/null
+++ b/main.py
@@ -0,0 +1,76 @@
+#!/usr/bin/python3
+
+import argparse
+import tempfile
+import subprocess
+import shutil
+import os
+
+
+def call_git(args):
+    subprocess.run(['git'] + args, check=True)
+
+
+def copy_files_and_dirs(files_and_dirs, dest_dir):
+    rel_files_and_dirs = []
+    for file in files_and_dirs:
+        rel_path = os.path.relpath(file)
+        rel_files_and_dirs.append(rel_path)
+        dest_path = os.path.join(dest_dir, rel_path)
+        print(dest_path)
+        if os.path.isdir(file):
+            shutil.copytree(file, dest_path)
+        else:
+            os.makedirs(os.path.dirname(dest_path), exist_ok=True)
+            shutil.copy2(file, dest_path)
+
+    return rel_files_and_dirs
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Publishes files to the specified branch in a single commit with force push to erase history.')
+    parser.add_argument('--github-token', '-t', action='store',
+                        required=True, type=str, help='GitHub token to use for push operation.')
+    parser.add_argument('--github-actor', '-a', action='store',
+                        required=True, type=str, help='GitHub username to use for push operation.')
+    parser.add_argument('--github-repository', '-r', action='store',
+                        required=True, type=str, help='The GitHub repository to where the files should be published in <username/repo> format.')
+    parser.add_argument('--branch', '-b', action='store', required=True, type=str,
+                        help='The branch to where the files should be published.')
+    parser.add_argument('--files-and-dirs', '-f', action='store', required=True, type=str,
+                        nargs='+', help='List of paths (relative or absolute) of the files and directories to publish. They must be inside the current working directory. The directory structure relative to current working directory is kept for publishing.')
+    parser.add_argument('--author-name', '-u', action='store', required=True,
+                        type=str, help='The name that will appear in the commit.')
+    parser.add_argument('--author-email', '-n', action='store', required=True,
+                        type=str, help='The email that will appear in the commit.')
+    parser.add_argument('--commit-message', '-c', action='store', required=True,
+                        type=str, help='The commit message that will appear in the commit.')
+
+    args = parser.parse_args()
+
+    print('Publishing files ({}) to branch {}'.format(
+        ';'.join(args.files_and_dirs), args.branch))
+
+    with tempfile.TemporaryDirectory() as temp_dir:
+        print('Working directory is {}'.format(temp_dir))
+
+        rel_files_and_dirs = copy_files_and_dirs(args.files_and_dirs, temp_dir)
+        os.chdir(temp_dir)
+
+        remote_repo = 'https://{}:{}@github.com/{}.git'.format(
+            args.github_actor, args.github_token, args.github_repository)
+
+        call_git(['init'])
+        call_git(['config', 'user.name', args.author_name])
+        call_git(['config', 'user.email', args.author_email])
+        call_git(['remote', 'add', 'origin', remote_repo])
+        call_git(['checkout', '-b', args.branch])
+        call_git(['add', '-f'] + rel_files_and_dirs)
+        call_git(['commit', '-m', args.commit_message])
+        call_git(['push', 'origin', '{}:{}'.format(
+            args.branch, args.branch), '--force'])
+
+
+if __name__ == "__main__":
+    main()
diff --git a/test/a.txt b/test/a.txt
new file mode 100644
index 0000000..fcb664f
--- /dev/null
+++ b/test/a.txt
@@ -0,0 +1 @@
+test a
\ No newline at end of file
diff --git a/test/b.txt b/test/b.txt
new file mode 100644
index 0000000..a6d9475
--- /dev/null
+++ b/test/b.txt
@@ -0,0 +1 @@
+test b
\ No newline at end of file
diff --git a/test/directory with space/d.txt b/test/directory with space/d.txt
new file mode 100644
index 0000000..384b955
--- /dev/null
+++ b/test/directory with space/d.txt	
@@ -0,0 +1 @@
+test directory with space/d.txt
\ No newline at end of file
diff --git a/test/file with space.txt b/test/file with space.txt
new file mode 100644
index 0000000..bc13539
--- /dev/null
+++ b/test/file with space.txt	
@@ -0,0 +1 @@
+test file with space.txt
\ No newline at end of file
diff --git a/test/other_dir/e.txt b/test/other_dir/e.txt
new file mode 100644
index 0000000..dc37ccf
--- /dev/null
+++ b/test/other_dir/e.txt
@@ -0,0 +1 @@
+test other_dir/e
\ No newline at end of file
diff --git a/test/some_dir/c.txt b/test/some_dir/c.txt
new file mode 100644
index 0000000..f774e1c
--- /dev/null
+++ b/test/some_dir/c.txt
@@ -0,0 +1 @@
+test some_dir/c
\ No newline at end of file