Feature/multi arch docker

.github/workflows/docker-image.yml

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+name: Docker Image CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+
+jobs:
+
+  build:
+    strategy:
+      matrix:
+        arch: [amd64, arm64]
+      fail-fast: false
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install build essentials
+      run: sudo apt-get install build-essential
+    - name: Install arm64 build support
+      run: sudo apt-get install qemu binfmt-support qemu-user-static
+    - name: Build the Docker image
+      run: docker build . --file ${{ matrix.arch }}.dockerfile --tag segelzwerg/family-foto:${{ matrix.arch }}

amd64.dockerfile

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+FROM python:3.9-buster
+COPY ./requirements.txt requirements.txt
+RUN apt-get update
+RUN apt-get install -y libgl1-mesa-dev
+RUN pip install -r requirements.txt
+WORKDIR /app
+ENV FLASK_APP family_foto
+ENV FLASK_RUN_HOST 0.0.0.0
+COPY . .
+CMD ["flask", "run"]

arm64.dockerfile

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+FROM multiarch/qemu-user-static:x86_64-aarch64 as qemu
+
+FROM arm64v8/python:3.9-slim
+COPY --from=qemu /usr/bin/qemu-aarch64-static /usr/bin
+COPY ./requirements.txt requirements.txt
+RUN uname -a
+RUN apt-get update -qq
+RUN apt-get install build-essential git -yq
+# this is temporary until opencv-python is released on pypi with arm64 support
+# RUN pip install --default-timeout=1000 git+https://github.com/skvark/opencv-python.git
+RUN pip install --default-timeout=1000 -r requirements.txt
+WORKDIR /app
+ENV FLASK_APP family_foto
+ENV FLASK_RUN_HOST 0.0.0.0
+COPY . .
+CMD ["flask", "run"]

docker-compose.yml

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+version: '3'
+services:
+  web:
+    container_name: family-foto
+    image: segelzwerg/family-foto:amd64
+    ports:
+      - "5050:5000"

uwsgi.ini

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+[uswsgi]
+callable = app
+master = true