使用非零代码生成失败：2
以下提供了docker文件：
FROM ubuntu:bionic
RUN \
apt-get update \
&& apt-get install -y -q curl gnupg \
&& curl -sSL 'http://p80.pool.sks-keyservers.net/pks/lookup?op=get&search=0x8AA7AF1F1091A5FD' | apt-key add - \
&& echo 'deb [arch=amd64] http://repo.sawtooth.me/ubuntu/chime/stable bionic universe' >> /etc/apt/sources.list \
&& apt-get update
ENV DEBIAN_FRONTEND=noninteractive
RUN apt-get install -y --allow-unauthenticated -q \
python3-pip \
python3-sawtooth-sdk \
python3-sawtooth-rest-api \
python3-sawtooth-cli \
cron-apt \
curl
RUN curl -sL https://deb.nodesource.com/setup_6.x | bash - \
&& apt-get install -y nodejs
RUN pip3 install \
pylint \
pycodestyle \
grpcio-tools==1.29.0 \
nose2 \
bcrypt \
pycrypto \
rethinkdb \
sanic \
swagger-ui-py \
itsdangerous
WORKDIR /project/sawtooth-marketplace
COPY sawbuck_app/package.json /project/sawtooth-marketplace/sawbuck_app/
RUN cd sawbuck_app/ && npm install
ENV PATH $PATH:/project/sawtooth-marketplace/bin
# Note that the context must be set to the project's root directory
COPY . .
RUN market-protogen
以下是记录的来自服务器的日志，我不知道为什么构建失败，有人可以指导吗？
Service 'market-shell' failed to build: The command '/bin/sh -c apt-get update && apt-get install -y -q curl gnupg
&& curl -sSL 'http://p80.pool.sks-keyservers.net/pks/lookup?op=get&search=0x8AA7AF1F1091A5FD' | apt-key add -
&& echo 'deb [arch=amd64] http://repo.sawtooth.me/ubuntu/chime/stable bionic universe'>> /etc/apt/sources.list
&& apt-get update' returned a non-zero code: 2
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