Add Dockerfile + CI/CD

.drone-manifest.yml

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+image: registry.nemunai.re/epaper-status:{{#if build.tag}}{{trimPrefix "v" build.tag}}{{else}}latest{{/if}}
+{{#if build.tags}}
+tags:
+{{#each build.tags}}
+  - {{this}}
+{{/each}}
+{{/if}}
+manifests:
+  - image: registry.nemunai.re/epaper-status:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-amd64
+    platform:
+      architecture: amd64
+      os: linux
+  - image: registry.nemunai.re/epaper-status:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm64
+    platform:
+      architecture: arm64
+      os: linux
+      variant: v8
+  - image: registry.nemunai.re/epaper-status:{{#if build.tag}}{{trimPrefix "v" build.tag}}-{{/if}}linux-arm
+    platform:
+      architecture: arm
+      os: linux
+      variant: v7

.drone.yml

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+---
+kind: pipeline
+type: docker
+name: build-amd64
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: docker build and publish
+    image: plugins/docker
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      registry: registry.nemunai.re
+      repo: registry.nemunai.re/epaper-status
+      auto_tag: true
+      auto_tag_suffix: ${DRONE_STAGE_OS}-${DRONE_STAGE_ARCH}
+    when:
+      branch:
+        - master
+
+---
+kind: pipeline
+type: docker
+name: build-arm64
+
+platform:
+  os: linux
+  arch: arm64
+
+steps:
+  - name: docker build and publish
+    image: plugins/docker
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      registry: registry.nemunai.re
+      repo: registry.nemunai.re/epaper-status
+      auto_tag: true
+      auto_tag_suffix: ${DRONE_STAGE_OS}-${DRONE_STAGE_ARCH}
+    when:
+      branch:
+        - master
+
+---
+kind: pipeline
+name: docker-manifest
+steps:
+  - name: publish manifest
+    image: plugins/manifest
+    settings:
+      auto_tag: true
+      ignore_missing: true
+      spec: .drone-manifest.yml
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+
+trigger:
+  event:
+  - push
+  - tag
+
+depends_on:
+- build-amd64
+- build-arm64

Dockerfile

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+FROM python:3-alpine
+
+ENTRYPOINT ["python", "/srv/e-paper/main.py"]
+
+WORKDIR /srv/e-paper
+VOLUME /data
+
+RUN apk add --no-cache cairo py3-cairosvg && pip install --upgrade icalendar "Pillow<10" pygal
+
+ADD https://github.com/adobe-fonts/source-sans/raw/release/OTF/SourceSans3-Bold.otf /usr/share/fonts/source-sans/SourceSans3-Bold.otf
+ADD https://github.com/adobe-fonts/source-sans/raw/release/OTF/SourceSans3-It.otf /usr/share/fonts/source-sans/SourceSans3-It.otf
+ADD https://github.com/adobe-fonts/source-sans/raw/release/OTF/SourceSans3-Regular.otf /usr/share/fonts/source-sans/SourceSans3-Regular.otf
+
+COPY modules modules
+COPY fonts fonts
+COPY icons icons
+COPY main.py .
+
+WORKDIR /data