Add GitHub Actions workflow to publish packages

.github/workflows/release.yml

@@ -0,0 +1,48 @@
+name: Publish packages
+
+on:
+    push:
+        branches:
+          - 'releases/**'
+        tags:
+          - v3
+          - v3.*
+
+jobs:
+    publish:
+        runs-on: ubuntu-latest
+        steps:
+          - name: Checkout repo
+            uses: actions/checkout@v2
+          - name: Set up Python 3.7
+            uses: actions/setup-python@v1
+            with:
+                python-version: 3.7
+          - name: Install dependencies
+            run: |
+                python -m pip install --upgrade pip poetry==1.0
+          - name: Build wheel
+            run: |
+                poetry build
+          - name: Publish to PyPI
+            env:
+                POETRY_PYPI_TOKEN_PYPI: ${{ secrets.PYPI_TOKEN }}
+            run: |
+                poetry publish
+          - name: Prepare AUR package
+            env:
+                AUR_SSH_KEY: ${{ secrets.AUR_SSH_KEY }}
+                GIT_EMAIL: ${{ secrets.GIT_EMAIL }}
+                GIT_NAME: ${{ secrets.GIT_NAME }}
+            run: >
+                docker build
+                  ./.github/workflows/aur
+                  --build-arg AUR_SSH_KEY
+                  --build-arg aiogram_ver="$(git describe --tags ${GITHUB_REF}
+                                             | sed -E 's/^v//')"
+                  --build-arg GIT_EMAIL
+                  --build-arg GIT_NAME
+                  -t aiogram/aur
+          - name: Build and publish AUR package
+            run: |
+                docker run aiogram/aur build && docker run aiogram/aur publish