Update unit test base Docker image (#1193)

* Do not install sox system-wide, so that it will never get mixed up with static one torchaudio builds
* Do not install cmake system-wide
* Move libsndfile installation to Docker image

.circleci/config.yml

@@ -388,7 +388,7 @@ jobs:
   unittest_linux_cpu:
     <<: *binary_common
     docker:
-      - image: "pytorch/torchaudio_unittest_base:manylinux"
+      - image: pytorch/torchaudio_unittest_base:manylinux-20210121
     resource_class: 2xlarge+
     steps:
       - checkout
@@ -417,7 +417,7 @@ jobs:
     resource_class: gpu.small
     environment:
       <<: *environment
-      image_name: pytorch/torchaudio_unittest_base:manylinux-cuda10.1-cudnn7-20201203
+      image_name: pytorch/torchaudio_unittest_base:manylinux-cuda10.1-cudnn7-20210121
     steps:
       - checkout
       - attach_workspace:

.circleci/config.yml.in

@@ -388,7 +388,7 @@ jobs:
   unittest_linux_cpu:
     <<: *binary_common
     docker:
-      - image: "pytorch/torchaudio_unittest_base:manylinux"
+      - image: pytorch/torchaudio_unittest_base:manylinux-20210121
     resource_class: 2xlarge+
     steps:
       - checkout
@@ -417,7 +417,7 @@ jobs:
     resource_class: gpu.small
     environment:
       <<: *environment
-      image_name: pytorch/torchaudio_unittest_base:manylinux-cuda10.1-cudnn7-20201203
+      image_name: pytorch/torchaudio_unittest_base:manylinux-cuda10.1-cudnn7-20210121
     steps:
       - checkout
       - attach_workspace:

.circleci/unittest/linux/docker/Dockerfile

@@ -45,14 +45,11 @@ RUN apt update && apt install -y \
         gfortran \
         git \
         libatlas3-base \
+        libsndfile1 \
         wget \
         curl \
         make \
         file \
-        sox \
-        libsox-dev \
-        libsox-fmt-all \
-        cmake \
         pkg-config \
     && rm -rf /var/lib/apt/lists/*
 COPY --from=builder /kaldi /kaldi

.circleci/unittest/linux/scripts/install.sh

@@ -43,8 +43,6 @@ BUILD_TRANSDUCER=1 BUILD_SOX=1 python setup.py install
 # 3. Install Test tools
 printf "* Installing test tools\n"
 if [ "${os}" == Linux ] ; then
-    # TODO: move this to docker
-    apt install -y -q libsndfile1
     conda install -y -c conda-forge codecov pytest pytest-cov
     pip install kaldi-io 'librosa>=0.8.0' parameterized SoundFile scipy 'requests>=2.20'
 else