Unable to start camunda tomcat 7.6

I am trying to create a docker image for camunda with jre7 since there is none. I want to basically try out this plugin which is as per their docs tested only upto 7.6.

Below is my Dockerfile

FROM openjdk:7u211-jre-alpine3.9

EXPOSE 8080 8000

USER root
RUN mkdir camunda
RUN cd camunda
COPY ./configuration/userlib/camunda-bpm-tomcat-7.6.0.zip .
RUN unzip camunda-bpm-tomcat-7.6.0.zip

ENTRYPOINT ["sh", "./start-camunda.sh"]

I then build the image and start it. However the container just exits after the following log

starting camunda BPM platform on Tomcat Application Server
Using CATALINA_BASE: ./server/apache-tomcat-8.0.24
Using CATALINA_HOME: ./server/apache-tomcat-8.0.24
Using CATALINA_TMPDIR: ./server/apache-tomcat-8.0.24/temp
Using JRE_HOME: /usr/lib/jvm/java-1.7-openjdk/jre
Using CLASSPATH: ./server/apache-tomcat-8.0.24/bin/bootstrap.jar:./server/apache-tomcat-8.0.24/bin/tomcat-juli.jar
Tomcat started.

I dont see any errors but my container exits with exit code (0). Moreover http://localhost:8080/camunda, is unaccesible. What am I doing wrong?

if you have flexibility to use a different JRE version then try with JRE 1.8.

I was able to correct the dockerfile and push a docker image you can now access here Docker Hub