feat: add drone config

.drone.yml

@@ -0,0 +1,51 @@
+kind: pipeline
+name: build
+
+steps:
+  - name: dependencies
+    image: node:20-alpine
+    pull: always
+    environment:
+      PNPM_CACHE_FOLDER: .cache/pnpm
+    commands:
+      - corepack enable && pnpm config set store-dir .cache/pnpm
+      - pnpm install --frozen-lockfile --fetch-timeout 100000
+
+  - name: lint
+    image: node:20-alpine
+    pull: always
+    environment:
+      PNPM_CACHE_FOLDER: .cache/pnpm
+    commands:
+      - corepack enable && pnpm config set store-dir .cache/pnpm
+      - pnpm run lint
+    depends_on:
+      - dependencies
+
+  - name: build
+    image: node:20-alpine
+    pull: always
+    environment:
+      PNPM_CACHE_FOLDER: .cache/pnpm
+    commands:
+      - corepack enable && pnpm config set store-dir .cache/pnpm
+      - pnpm run build
+    depends_on:
+      - dependencies
+
+  - name: docker
+    image: plugins/docker
+    pull: true
+    depends_on:
+      - build
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      repo: vikunja/website
+      tags:
+        - next
+    when:
+      event: [ push ]
+      branch: [ main ]