Added docker container file

.drone.yml

@@ -0,0 +1,29 @@
+kind: pipeline
+name: default
+
+steps:
+  - name: docker  
+    image: plugins/docker
+    settings:
+      registry: registry.d1v3.de
+      repo: registry.d1v3.de/dnd-spellcard-builder
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      tags: latest
+      auto_tag: true
+---
+kind: secret
+name: docker_username
+get:
+    path: kv/data/drone/docker
+    name: username
+---
+
+kind: secret
+name: docker_password
+get:
+    path: kv/data/drone/docker
+    name: token
+

Dockerfile

@@ -0,0 +1,17 @@
+FROM python:3.8-alpine as base
+
+FROM base as builder
+RUN mkdir /install
+WORKDIR /install
+COPY requirements.txt /requirements.txt
+RUN pip install --install-option="--prefix=/install" -r /requirements.txt
+
+FROM base
+COPY --from=builder /install /usr/local
+RUN addgroup -S appgroup && adduser -S appuser -G appgroup
+
+WORKDIR /home/appuser
+USER appuser
+
+COPY ./
+ENTRYPOINT ["python", "./genspells.py"]