diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
new file mode 100644
index 0000000..6ec5ec5
--- /dev/null
+++ b/.github/workflows/docker.yaml
@@ -0,0 +1,39 @@
+name: Docker
+on:
+  push:
+    tags:
+      - v*.*.*
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Log into registry ${{ env.REGISTRY }}
+        uses: docker/login-action@28218f9b04b4f3f62068d7b6ce6ca5b26e35336c
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@ad44023a93711e3deb337508980b4b5e9bcdc5dc
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c3b4f44
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__/*
+venv/*
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..d66ecbf
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,13 @@
+FROM python:3-alpine
+
+RUN mkdir -p /usr/src/app
+
+WORKDIR /usr/src/app
+COPY requirements.txt /usr/src/app/
+
+RUN pip3 install --no-cache-dir -r requirements.txt
+COPY . /usr/src/app
+
+EXPOSE 50000
+USER 1001
+CMD [ "python", "./main.py" ]
\ No newline at end of file
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..c414ee1
--- /dev/null
+++ b/main.py
@@ -0,0 +1,38 @@
+from __future__ import print_function
+import time
+import kubernetes.client
+from kubernetes import config
+from kubernetes.client.rest import ApiException
+from pprint import pprint
+import json
+from flask import Flask,render_template,Response
+from prometheus_client import Gauge,generate_latest
+
+CONTENT_TYPE_LATEST = str('text/plain; version=0.0.4; charset=utf-8')
+
+c = Gauge('kube_csr_pending', 'List of unapproved CSR', ['name'])
+config.load_kube_config()
+
+app = Flask(__name__)
+
+@app.route("/metrics")
+def metrics():
+  try:
+    configuration = kubernetes.client.Configuration().get_default_copy()
+
+    with kubernetes.client.ApiClient(configuration) as api_client:
+      api_instance = kubernetes.client.CertificatesV1beta1Api(api_client)
+
+    certificates = api_instance.list_certificate_signing_request()
+    for certificate in certificates.items:
+      if certificate.status.certificate is None:
+        c.labels(name=certificate.metadata.name).set(1)
+      else:
+        c.labels(name=certificate.metadata.name).set(0)
+  except ApiException as e:
+    print("Exception when calling CertificatesV1beta1Api->list_certificate_signing_request: %s\n" % e)
+  except AttributeError:
+    configuration = Configuration()
+    configuration.assert_hostname = False
+
+  return Response(generate_latest(), mimetype=CONTENT_TYPE_LATEST)
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..4368d2c
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,17 @@
+cachetools==4.2.4
+certifi==2021.10.8
+charset-normalizer==2.0.8
+google-auth==2.3.3
+idna==3.3
+kubernetes==19.15.0
+oauthlib==3.1.1
+pyasn1==0.4.8
+pyasn1-modules==0.2.8
+python-dateutil==2.8.2
+PyYAML==6.0
+requests==2.26.0
+requests-oauthlib==1.3.0
+rsa==4.8
+six==1.16.0
+urllib3==1.26.7
+websocket-client==1.2.1