diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 9e213d9..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,62 +0,0 @@
-# Python CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-python/ for more details
-#
-version: 2
-jobs:
-  build:
-    docker:
-      # specify the version you desire here
-      # use `-browsers` prefix for selenium tests, e.g. `3.6.1-browsers`
-      - image: circleci/python:3.6.1
-      
-      # Specify service dependencies here if necessary
-      # CircleCI maintains a library of pre-built images
-      # documented at https://circleci.com/docs/2.0/circleci-images/
-      # - image: circleci/postgres:9.4
-
-    working_directory: ~/repo
-
-    steps:
-      - checkout
-
-      # Download and cache dependencies
-      - restore_cache:
-          keys:
-          - v1-dependencies-{{ checksum "requirements-ci.txt" }}
-          # fallback to using the latest cache if no exact match is found
-          - v1-dependencies-
-
-      - run:
-          name: install dependencies
-          command: |
-            python3 -m venv venv
-            . venv/bin/activate
-            pip install -r requirements-ci.txt
-
-      - save_cache:
-          paths:
-            - ./venv
-          key: v1-dependencies-{{ checksum "requirements-ci.txt" }}
-        
-      # run tests!
-      # this example uses Django's built-in test-runner
-      # other common Python testing frameworks include pytest and nose
-      # https://pytest.org
-      # https://nose.readthedocs.io
-      - run:
-          name: run tests
-          command: |
-            . venv/bin/activate
-            coverage run --include=test.py,registry.py test.py
-
-      - run:
-          name: generate report
-          command: |
-            . venv/bin/activate
-            mkdir -p /tmp/coverage
-            coverage html -d /tmp/coverage
-            mv .coverage /tmp/coverage
-
-      - store_artifacts:
-          path: /tmp/coverage
diff --git a/.gitea/workflows/build.yaml b/.gitea/workflows/build.yaml
new file mode 100644
index 0000000..72d63f5
--- /dev/null
+++ b/.gitea/workflows/build.yaml
@@ -0,0 +1,38 @@
+name: Build and Publish registry cleaner
+run-name: ${{ gitea.actor }} is runs ci pipeline
+on:
+  push:
+    branches: [main]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/catthehacker/ubuntu:act-latest
+    steps:
+      - uses: https://github.com/actions/checkout@v4
+      - name: Set up Docker Buildx
+        uses: https://github.com/docker/setup-buildx-action@v3
+        env:
+          DOCKER_HOST: unix:///var/run/docker.sock
+        with:
+          config-inline: |
+            [registry."docker.office.clintonambulance.com"]
+      - name: Log in to Docker Registry
+        uses: https://github.com/docker/login-action@v3
+        with:
+          registry: docker.office.clintonambulance.com
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Build and push Docker image
+        uses: https://github.com/docker/build-push-action@v5
+        env:
+          DOCKER_HOST: unix:///var/run/docker.sock
+        with:
+          context: .
+          file: frontend/Dockerfile
+          push: true
+          platforms: linux/arm64
+          tags: |
+            docker.office.clintonambulance.com/registry-cli:${{ gitea.sha }}
+            docker.office.clintonambulance.com/registry-cli:latest
diff --git a/Dockerfile b/Dockerfile
index fa1ff96..af122c7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:2.7-alpine
+FROM python:alpine
 
 ADD requirements-build.txt /
 
diff --git a/registry.py b/registry.py
index 18ad6c8..c1299f0 100755
--- a/registry.py
+++ b/registry.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 ######
 # github repository: https://github.com/andrey-pohilko/registry-cli
@@ -8,7 +8,8 @@
 
 import requests
 import ast
-from requests.packages.urllib3.exceptions import InsecureRequestWarning
+import urllib3
+from urllib3.exceptions import InsecureRequestWarning
 import json
 import pprint
 import base64
@@ -148,7 +149,7 @@ def decode_base64(data):
     missing_padding = len(data) % 4
     if missing_padding != 0:
         data += b'='* (4 - missing_padding)
-    return base64.decodestring(data)
+    return base64.decodebytes(data.encode() if isinstance(data, str) else data)
 
 
 def get_error_explanation(context, error_code):
@@ -753,7 +754,7 @@ def main_loop(args):
     keep_last_versions = int(args.num)
 
     if args.no_validate_ssl:
-        requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
+        urllib3.disable_warnings(InsecureRequestWarning)
 
     if args.read_password:
         if args.login is None:
diff --git a/requirements-build.txt b/requirements-build.txt
index e3946ce..28d7604 100644
--- a/requirements-build.txt
+++ b/requirements-build.txt
@@ -1,7 +1,7 @@
-certifi==2017.7.27.1
-chardet==3.0.4
+certifi>=2017.7.27.1
+chardet>=3.0.4
 idna>=2.5
-python-dateutil==2.8.0
+python-dateutil>=2.8.0
 requests>=2.20.0
 urllib3>=1.23
-www-authenticate==0.9.2
\ No newline at end of file
+www-authenticate>=0.9.2
\ No newline at end of file
diff --git a/requirements-ci.txt b/requirements-ci.txt
index 59a60bb..def33cb 100644
--- a/requirements-ci.txt
+++ b/requirements-ci.txt
@@ -1,4 +1,3 @@
-mock
 coverage
 certifi
 chardet
diff --git a/test.py b/test.py
index 18b6301..304cd90 100644
--- a/test.py
+++ b/test.py
@@ -7,7 +7,7 @@ from dateutil.tz import tzutc, tzoffset
 from registry import Registry, Requests, get_tags, parse_args, \
     delete_tags, delete_tags_by_age, get_error_explanation, get_newer_tags, \
     keep_images_like, main_loop, get_datetime_tags, get_ordered_tags
-from mock import MagicMock, patch
+from unittest.mock import MagicMock, patch
 import requests