Dockerfile and run script to build a Docker image for SonarQube 7.4 Developer Edition

Dockerfile

# SonarSource did not make official Docker images for SonarQube 7.1 and above (as of 2018-11-20)
# This Dockerfile will build SonarQube 7.4 Developer Edition
# Based on https://github.com/SonarSource/docker-sonarqube/blob/5d738964cc4b857ca5b399d6f0bb626b6710bac6/7.1/Dockerfile
FROM openjdk:8
  
ENV SONAR_VERSION=7.4 \
    SONARQUBE_HOME=/opt/sonarqube \
    # Database configuration
    # Defaults to using H2
    SONARQUBE_JDBC_USERNAME=sonar \
    SONARQUBE_JDBC_PASSWORD=sonar \
    SONARQUBE_JDBC_URL=

# Http port
EXPOSE 9000

RUN groupadd -r sonarqube && useradd -r -g sonarqube sonarqube

# grab gosu for easy step-down from root
RUN set -x \
    && wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/1.10/gosu-$(dpkg --print-architecture)" \
    && wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/1.10/gosu-$(dpkg --print-architecture).asc" \
    && export GNUPGHOME="$(mktemp -d)" \
    && gpg --keyserver keyserver.ubuntu.com --recv-keys 0x036a9c25bf357dd4 \
    && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
    && rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc \
    && chmod +x /usr/local/bin/gosu \
    && gosu nobody true

RUN set -x \
    && gpg --keyserver keyserver.ubuntu.com --recv-keys 0xcfca4a29d26468de \
    && cd /opt \
    && curl -o sonarqube.zip -fSL https://binaries.sonarsource.com/CommercialDistribution/sonarqube-developer/sonarqube-developer-$SONAR_VERSION.zip \
    && curl -o sonarqube.zip.asc -fSL https://binaries.sonarsource.com/CommercialDistribution/sonarqube-developer/sonarqube-developer-$SONAR_VERSION.zip.asc \
    && gpg --batch --verify sonarqube.zip.asc sonarqube.zip \
    && unzip sonarqube.zip \
    && mv sonarqube-$SONAR_VERSION sonarqube \
    && chown -R sonarqube:sonarqube sonarqube \
    && rm sonarqube.zip* \
    && rm -rf $SONARQUBE_HOME/bin/*

VOLUME "$SONARQUBE_HOME/data"

WORKDIR $SONARQUBE_HOME
COPY run.sh $SONARQUBE_HOME/bin/
ENTRYPOINT ["./bin/run.sh"]
~                           

run.sh

#!/bin/bash
  
set -e

if [ "${1:0:1}" != '-' ]; then
  exec "$@"
fi

chown -R sonarqube:sonarqube $SONARQUBE_HOME
exec gosu sonarqube \
  java -jar lib/sonar-application-$SONAR_VERSION.jar \
  -Dsonar.log.console=true \
  -Dsonar.jdbc.username="$SONARQUBE_JDBC_USERNAME" \
  -Dsonar.jdbc.password="$SONARQUBE_JDBC_PASSWORD" \
  -Dsonar.jdbc.url="$SONARQUBE_JDBC_URL" \
  -Dsonar.web.javaAdditionalOpts="$SONARQUBE_WEB_JVM_OPTS -Djava.security.egd=file:/dev/./urandom" \
  "$@"

Can I apply the dev license key when using this docker image to unlock Dev edition?
How can I add custom .jar files to the image, such as code scan?