Set CI and configure dependabot

.github/dependabot.yml

@@ -0,0 +1,23 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "pip"
+    directory: "/poetry"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    groups:
+      dev:
+        dependency-type: "development"
+      production:
+        dependency-type: "production"
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/pr.yaml

@@ -0,0 +1,17 @@
+on:
+  pull_request: {}
+  push:
+    branches:
+      - main
+  workflow_dispatch: {}
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: earthly/actions-setup@v1
+        with:
+          version: ">=0.8 <1.0"
+      - run: |
+          earthly --ci +ci