Adds GitHub Actions CI config

.drone.yml

@@ -1,22 +0,0 @@
-kind: pipeline
-name: default
-
-auth: &auth
-    username:
-        from_secret: dockerhub_username
-    password:
-        from_secret: dockerhub_password
-
-repo: &repo
-    repo: maxkratz/imapgrab
-
-steps:
-  - name: build-latest
-    image: plugins/docker
-    settings:
-        <<: *repo
-        tags: latest
-        <<: *auth
-    when:
-        branch:
-            - main

.github/workflows/build.yml

@@ -0,0 +1,31 @@
+name: Build Docker images
+on:
+  push:
+    branches:
+      - 'main'
+      - 'testing/**'
+      - 'feature/**'
+      - 'hotfix/**'
+
+jobs:
+  build-latest:
+    runs-on: [ubuntu-22.04]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Build latest
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          push: ${{ github.event_name == 'push' && contains(github.ref, 'refs/heads/main') && github.event_name != 'schedule' }}
+          tags: maxkratz/imapgrab:latest
+          platforms: linux/amd64

README.md

@@ -1,6 +1,6 @@
 # docker_imapgrab
 
-[![Build Status](https://github.ci.maxkratz.com/api/badges/maxkratz/docker_imapgrab/status.svg)](https://github.ci.maxkratz.com/maxkratz/docker_imapgrab)
+[![Build Docker images](https://github.com/maxkratz/docker_imapgrab/actions/workflows/build.yml/badge.svg)](https://github.com/maxkratz/docker_imapgrab/actions/workflows/build.yml)
 
 *Unofficial* imapgrab Dockerfile for backing up all folders of an imap server.
 
@@ -37,10 +37,10 @@ Creates a backup of all files and folders of the mailbox **user@example.net** wi
 
 ## Dockerfile
 The Dockerfile can be found at:
-[https://github.com/maxkratz/docker_imapgrab/blob/master/Dockerfile](https://github.com/maxkratz/docker_imapgrab/blob/master/Dockerfile)
+[https://github.com/maxkratz/docker_imapgrab/blob/main/Dockerfile](https://github.com/maxkratz/docker_imapgrab/blob/main/Dockerfile)
 
 ## What gets installed in this container?
 The following packages are installed within this docker container:
 
 * Some utility packages like git, curl, getmail etc.
-* [IMAPbackup by ralbear](https://github.com/ralbear/IMAPbackup) (thats the whole point ...)
+* [IMAPbackup by ralbear](https://github.com/ralbear/IMAPbackup) (thats the whole point ...)