Support docker

.github/workflows/build-docker-image.yml

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+name: Build docker image
+on:
+  push:
+    branches:
+      - docker
+
+  workflow_dispatch:
+
+concurrency:
+  group: build_docker-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build-doc:
+    name: build docker image
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          push: true
+          tags: k2fsa/icefall:torch1.13.0-cuda11.6

docker/torch1.13.0-cuda11.6-cudnn8.dockerfile

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+FROM pytorch/pytorch:1.13.0-cuda11.6-cudnn8-devel
+
+# Install dependencies
+RUN pip install --no-cache-dir \
+      torchaudio==0.13.0+cu116 -f https://download.pytorch.org/whl/torch_stable.html \
+      k2==1.24.3.dev20230725+cuda11.6.torch1.13.0 -f https://k2-fsa.github.io/k2/cuda.html \
+      git+https://github.com/lhotse-speech/lhotse \
+      kaldifeat==1.25.0.dev20230726+cuda11.6.torch1.13.0 -f https://csukuangfj.github.io/kaldifeat/cuda.html \
+      \
+      kaldifst \
+      kaldilm \
+      kaldialign \
+      sentencepiece>=0.1.96 \
+      tensorboard \
+      typeguard \
+      dill \
+
+RUN git clone https://github.com/k2-fsa/icefall /workspace/icefall && \
+	cd /workspace/icefall && \
+	pip install --no-cache-dir -r requirements.txt
+
+ENV PYTHONPATH /workspace/icefall:$PYTHONPATH
+
+WORKDIR /workspace/icefall
+