Instalando o Tomcat 8.* em um contêiner docker com o Centos 7

Eu quero criar um contêiner docker para instalar o Tomcat dentro dele. Parece que meu docker compila sem problemas e também consigo executar o tomcat sem problemas relatados pelos logs. No entanto, se eu tentar abrir o tomcat, recebo um erro 404. Eu não sei o que estou perdendo. Alguma ideia, por favor? O próximo é o conteúdo do meu Dockerfile:

FROM centos:7
MAINTAINER joseccz

EXPOSE 8080
EXPOSE 8009


RUN yum install -y mc
RUN yum install -y wget
# RUN yum install -y apr-devel openssl-devel
RUN yum install -y gcc
RUN yum install epel-release -y
RUN yum install dnf -y
RUN yum install net-tools -y
RUN yum install libtool -y

ENV JAVA_HOME       /opt/javaSDK
ENV JRE_HOME        ${JAVA_HOME}/jre

ADD javaSDK ${JAVA_HOME}

ADD tomcat.service /etc/systemd/system/




# ----------------------------------------------- Copy Tomcat Files to /opt/tomcat -----------------------------------------------
ENV TOMCAT_MAJOR 8
ENV TOMCAT_VERSION 8.5.45
ENV CATALINA_HOME   /opt/tomcat

# http://www-us.apache.org/dist/tomcat/tomcat-8/v8.5.45/bin/apache-tomcat-8.5.45.tar.gz

ENV PATH        $JAVA_HOME/bin:$CATALINA_HOME/bin:$CATALINA_HOME/lib:$PATH

RUN wget http://www-us.apache.org/dist/tomcat/tomcat-${TOMCAT_MAJOR}/v${TOMCAT_VERSION}/bin/apache-tomcat-${TOMCAT_VERSION}.tar.gz && \
 tar -xvf apache-tomcat-${TOMCAT_VERSION}.tar.gz 

RUN mv apache-tomcat-${TOMCAT_VERSION} tomcat

RUN rm apache-tomcat*.tar.gz
RUN mv tomcat /opt/tomcat
# --------------------------------------------------------------------------------------------------------------------------------



RUN groupadd tomcat
RUN useradd -s /bin/nologin -g tomcat -d /opt/tomcat tomcat

# RUN wget https://rpmfind.net/linux/mageia/distrib/cauldron/x86_64/media/core/release/tomcat-native-1.2.23-1.mga8.x86_64.rpm
# RUN rpm -i tomcat-native-1.2.23-1.mga8.x86_64.rpm

# RUN cd /opt/tomcat
RUN chgrp -R tomcat /opt/tomcat/conf
RUN chmod g+rwx /opt/tomcat/conf
RUN chmod g+r /opt/tomcat/conf/*
RUN chown -R tomcat /opt/tomcat/logs/ /opt/tomcat/temp/ /opt/tomcat/webapps/ /opt/tomcat/work/

RUN chgrp -R tomcat /opt/tomcat/bin
RUN chgrp -R tomcat /opt/tomcat/lib
RUN chmod g+rwx /opt/tomcat/bin
RUN chmod g+r /opt/tomcat/bin/*

#----------------------------------Create /opt/software folder for addinitonal soft needed by Tomcat ------------------------------
RUN mkdir /opt/software

#---------------------------------------- copy and compile Development tools ---------------------------------------------------------

RUN yum groupinstall "Development Tools" -y

#---------------------------------------- Donwload and install open ssl ------------------------------------------------------------
RUN wget https://www.openssl.org/source/openssl-1.0.2l.tar.gz
RUN tar -xvf openssl-1.0.2l.tar.gz
RUN mv openssl-1.0.2l openssl
RUN mv openssl /opt/software/openssl
RUN cd /opt/software/openssl && ./config -fPIC --prefix=/opt/software/ --openssldir=/opt/software/ && make && make install

#---------------------------------------- Donwload and install open apr ------------------------------------------------------------
ENV APRVERSION 1.6.5
RUN wget http://apache.mirrors.ionfish.org//apr/apr-${APRVERSION}.tar.gz
RUN tar -xvf apr-${APRVERSION}.tar.gz
RUN mv apr-${APRVERSION} apr
RUN mv apr /opt/software/apr
RUN cd /opt/software/apr/ && \
    ./configure --prefix=/opt/software/ && \
     make && make install

#------------------------------------------ Copy TOMCAT native


# compiling tomcat native

RUN cd ${CATALINA_HOME}/bin/ && \
    tar -xvf tomcat-native.tar.gz && \
    cd tomcat-native-1.2.23-src/native/ && \
     ./configure --with-apr=/opt/software/ --with-java-home=/opt/javaSDK/  --with-ssl=/opt/software  --prefix=/opt/tomcat && \
    make && \
    make install

ADD setenv.sh /opt/tomcat/bin/

o conteúdo do meu arquivo setenv.sh é:

export JAVA_HOME=/opt/javaSDK
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$CATALINA_HOME/lib
export LD_LIBRARY_PATH