问从Dockerfile CMD调用sh文件时，无法在docker容器中设置环境变量

EN

# builder step used to download and configure spark environment
FROM openjdk:11.0.11-jre-slim-buster as builder

# Add Dependencies for PySpark
RUN apt-get update && apt-get install -y curl vim wget software-properties-common ssh net-tools ca-certificates python3 python3-pip python3-numpy python3-matplotlib python3-scipy python3-pandas python3-simpy

# JDBC driver download and install
ADD https://go.microsoft.com/fwlink/?linkid=2168494 /usr/share/java

RUN update-alternatives --install "/usr/bin/python" "python" "$(which python3)" 1

# Fix the value of PYTHONHASHSEED
# Note: this is needed when you use Python 3.3 or greater
ENV SPARK_VERSION=3.1.2 \
HADOOP_VERSION=3.2 \
SPARK_HOME=/opt/spark \
PYTHONHASHSEED=1

# Download and uncompress spark from the apache archive
RUN wget --no-verbose -O apache-spark.tgz "https://archive.apache.org/dist/spark/spark-${SPARK_VERSION}/spark-${SPARK_VERSION}-bin-hadoop${HADOOP_VERSION}.tgz" \
&& mkdir -p ${SPARK_HOME} \
&& tar -xf apache-spark.tgz -C ${SPARK_HOME} --strip-components=1 \
&& rm apache-spark.tgz

FROM apache-spark

WORKDIR ${SPARK_HOME}

ENV SPARK_MASTER_PORT=7077 \
SPARK_MASTER_WEBUI_PORT=8080 \
SPARK_LOG_DIR=${SPARK_HOME}/logs \
SPARK_MASTER_LOG=${SPARK_HOME}/logs/spark-master.out \
SPARK_WORKER_LOG=${SPARK_HOME}/logs/spark-worker.out \
SPARK_WORKER_WEBUI_PORT=8080 \
SPARK_MASTER="spark://spark-master:7077" \
SPARK_WORKLOAD="master"        

COPY start-spark.sh /

CMD ["/bin/bash", "/start-spark.sh"]

#!/bin/bash
. "$SPARK_HOME/bin/load-spark-env.sh"

export SPARK_BIN="${SPARK_HOME}/bin/" # This doesn't work here
export PATH="${SPARK_HOME}/bin/:${PATH}" # This doesn't work here      

# When the spark work_load is master run class org.apache.spark.deploy.master.Master
if [ "$SPARK_WORKLOAD" == "master" ];
then

export SPARK_MASTER_HOST=`hostname`           # This works here

cd $SPARK_BIN && ./spark-class org.apache.spark.deploy.master.Master --ip $SPARK_MASTER_HOST --port $SPARK_MASTER_PORT --webui-port $SPARK_MASTER_WEBUI_PORT >> $SPARK_MASTER_LOG. 

root@3abbd4508121:/opt/spark# export
declare -x HADOOP_VERSION="3.2"
declare -x HOME="/root"
declare -x HOSTNAME="3abbd4508121"
declare -x JAVA_HOME="/usr/local/openjdk-11"
declare -x JAVA_VERSION="11.0.11+9"
declare -x LANG="C.UTF-8"
declare -x OLDPWD
declare -x PATH="/usr/local/openjdk-11/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
declare -x PWD="/opt/spark"
declare -x PYTHONHASHSEED="1"
declare -x SHLVL="1"
declare -x SPARK_HOME="/opt/spark"
declare -x SPARK_LOCAL_IP="spark-master"
declare -x SPARK_LOG_DIR="/opt/spark/logs"
declare -x SPARK_MASTER="spark://spark-master:7077"
declare -x SPARK_MASTER_LOG="/opt/spark/logs/spark-master.out"
declare -x SPARK_MASTER_PORT="7077"
declare -x SPARK_MASTER_WEBUI_PORT="8080"
declare -x SPARK_VERSION="3.1.2"
declare -x SPARK_WORKER_LOG="/opt/spark/logs/spark-worker.out"
declare -x SPARK_WORKER_WEBUI_PORT="8080"
declare -x SPARK_WORKLOAD="master"
declare -x TERM="xterm"
root@3abbd4508121:/opt/spark#