Add github workflow

.dockerignore

@@ -7,4 +7,5 @@
 ./__pycache__/
 ./GlobalExambBot/__pycache__/
 .git
-*.md
+*.md
+.github

.github/workflows/docker-publish.yml

@@ -0,0 +1,27 @@
+on:
+  push:
+    branches:
+      - 'main'
+
+jobs:
+  build_and_push:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        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 and push
+        uses: docker/build-push-action@v4
+        with:
+          push: true
+          tags: j4rj4r/globalexambot:latest