diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..3a42fca
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,3 @@
+.github/
+.devcontainer/
+.dependabot/
diff --git a/SECURITY.md b/.github/SECURITY.md
similarity index 100%
rename from SECURITY.md
rename to .github/SECURITY.md
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..3bf6d3b
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,19 @@
+name: test
+
+on: [push]
+
+jobs:
+
+  test-implementation-job:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      # To use this repository's private action, you must check out the repository
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Test action step
+        uses: ./ # Uses an action in the root directory
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          source_repo_path: AndreasAugustin/template.git
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4c49bd7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.env
diff --git a/Dockerfile b/Dockerfile
index f8404d9..0fd0594 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,10 @@
 #######################################
 # image for dev build environment
 ######################################
-FROM alpine:3.12.0 as DEV
+FROM golang:1.14-alpine as DEV
+
 # install packages
-RUN apk add --update --no-cache bash make git zsh curl tmux
+RUN apk add --update --no-cache bash make git zsh curl tmux musl build-base
 
 # Make zsh your default shell for tmux
 RUN echo "set-option -g default-shell /bin/zsh" >> /root/.tmux.conf
@@ -11,6 +12,11 @@ RUN echo "set-option -g default-shell /bin/zsh" >> /root/.tmux.conf
 # install oh-my-zsh
 RUN sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"
 
+RUN git clone https://github.com/cli/cli.git gh-cli \
+    && cd gh-cli \
+    && make \
+    && mv ./bin/gh /usr/local/bin/
+
 WORKDIR /app
 
 #######################################
diff --git a/README.md b/README.md
index 9a2e838..f28b5d1 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # template
 
-![Lint](https://github.com/AndreasAugustin/template/workflows/Lint/badge.svg)
+![Lint](https://github.com/AndreasAugustin/actions-template-sync/workflows/Lint/badge.svg)
 
 ## DEV
 
diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..d65296a
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,19 @@
+name: 'Template sync'
+description: 'Synchronises changes of the template repository'
+author: 'AndreasAugustin'
+branding:
+  icon: cloud
+  color: green
+inputs:
+  github_token:
+    description: 'Token for the repo. Can be passed in using $\{{ secrets.GITHUB_TOKEN }}'
+    required: true
+  source_repo_path:
+    description: 'Repository path of the template'
+    required: true
+runs:
+  using: 'docker'
+  image: 'src/Dockerfile'
+  env:
+    GITHUB_TOKEN: ${{ inputs.github_token }}
+    SOURCE_REPO_PATH: ${{ inputs.source_repo_path }}
diff --git a/docker-compose.yml b/docker-compose.yml
index e0bd6ee..7e8ed92 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,6 +7,7 @@ services:
       target: DEV
     volumes:
       - .:/app/
+      - ~/.gitconfig:/root/.gitconfig:ro
   docs:
     build:
       context: .
diff --git a/src/Dockerfile b/src/Dockerfile
new file mode 100644
index 0000000..162bc47
--- /dev/null
+++ b/src/Dockerfile
@@ -0,0 +1,21 @@
+FROM golang:1.14-alpine
+# labels
+LABEL \
+  "name"="GitHub template sync" \
+  "homepage"="https://github.com/marketplace/actions/github-template-sync" \
+  "repository"="https://github.com/AndreasAugustin/actions-template-sync" \
+  "maintainer"="Andreas Augustin <dev@andreas-augustin.org>"
+
+# install packages
+RUN apk add --update --no-cache bash make git zsh curl tmux musl build-base
+
+RUN git clone https://github.com/cli/cli.git gh-cli \
+    && cd gh-cli \
+    && make \
+    && mv ./bin/gh /usr/local/bin/
+
+ADD *.sh /bin/
+RUN chmod +x /bin/entrypoint.sh \
+  && chmod +x /bin/sync_template.sh
+
+ENTRYPOINT ["/bin/entrypoint.sh"]
diff --git a/src/entrypoint.sh b/src/entrypoint.sh
new file mode 100755
index 0000000..8869014
--- /dev/null
+++ b/src/entrypoint.sh
@@ -0,0 +1,20 @@
+#! /usr/bin/env bash
+set -e
+
+[ -z "${GITHUB_TOKEN}" ] && {
+    echo "Missing input 'github_token: \${{ secrets.GITHUB_TOKEN }}'.";
+    exit 1;
+};
+
+if [[ -z "${SOURCE_REPO_PATH}" ]]; then
+  echo "Missing input 'source_repo_path: \${{ input.source_repo_path }}'.;"
+  exit 1
+fi
+
+SOURCE_REPO="https://${GITHUB_ACTOR}:${GITHUB_TOKEN}@github.com/${SOURCE_REPO_PATH}"
+
+echo "set git global configuration"
+git config --global user.email "github-action@actions-template-sync.noreply.github.com@"
+git config --global user.name "actions-template-sync"
+
+source sync_template.sh
diff --git a/src/sync_template.sh b/src/sync_template.sh
new file mode 100755
index 0000000..aab3ede
--- /dev/null
+++ b/src/sync_template.sh
@@ -0,0 +1,26 @@
+#! /usr/bin/env bash
+set -e
+
+if [[ -z "${SOURCE_REPO}" ]]; then
+  echo "Error: Missing env variable 'SOURCE_REPO'" >&2;
+  exit 1;
+fi
+
+if ! [ -x "$(command -v gh)" ]; then
+  echo "Error: github-cli gh is not installed. 'https://github.com/cli/cli'" >&2;
+  exit 1;
+fi
+
+NEW_BRANCH="chore/template_sync"
+
+echo "start sync"
+echo "create new branch from default branch with name ${NEW_BRANCH}"
+git checkout -b ${NEW_BRANCH}
+echo "pull changes from template"
+git pull "${SOURCE_REPO}" --allow-unrelated-histories
+git add .
+git commit -m "chore(template): merge template changes :up:"
+echo "push changes"
+git push --set-upstream origin "${NEW_BRANCH}"
+echo "create pull request"
+gh pr create -b master -f -l chore