Dockerfile

FROM dadez/jre:latest
MAINTAINER dadez <dadez@protonmail.com>

ARG BUILD_DATE
ARG VCS_REF

LABEL org.label-schema.build-date=$BUILD_DATE \
          org.label-schema.name="tomcat8" \
          org.label-schema.description="tomcat8 based on oracle java8 and alpine linux" \
          org.label-schema.vcs-ref=$VCS_REF \
          org.label-schema.vcs-url="https://github.com/dadez/tomcat-owasp" \
          org.label-schema.vendor="dadez" \
          org.label-schema.version=$VERSION \
          org.label-schema.schema-version="1.0"

ADD ./configureWebXMLforDocker.groovy /tmp/
ADD ./configureServerXMLforDocker.groovy /tmp/

ENV CATALINA_HOME /opt/tomcat
ENV PATH $CATALINA_HOME/bin:$PATH
RUN mkdir -p "$CATALINA_HOME"
WORKDIR $CATALINA_HOME

ENV TIMEZONE Europe/Zurich
ENV LANG en_US.UTF-8
ENV LC_ALL ""

ARG PROXY
ENV http_proxy ${PROXY:-""}
ENV https_proxy ${PROXY:-""}


RUN apk add --no-cache gnupg
# see https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/KEYS
# see also "update.sh" (https://github.com/docker-library/tomcat/blob/master/update.sh)
ENV GPG_KEYS 05AB33110949707C93A279E3D3EFE6B686867BA6 07E48665A34DCAFAE522E5E6266191C37C037D42 47309207D818FFD8DCD3F83F1931D684307A10A5 541FBE7D8F78B25E055DDEE13C370389288584E7 61B832AC2F1C5A90F0F9B00A1C506407564C17A3 79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED 9BA44C2621385CB966EBA586F72C284D731FABEE A27677289986DB50844682F8ACB77FC2E86E29AC A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23
RUN set -ex; \
	for key in $GPG_KEYS; do \
		gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
done

ARG TOMCAT_MAJOR
ENV TOMCAT_MAJOR ${TOMCAT_MAJOR:-8}
ARG TOMCAT_VERSION
ENV TOMCAT_VERSION ${TOMCAT_VERSION:-8.5.28}

ENV TOMCAT_TGZ_URL http://archive.apache.org/dist/tomcat/tomcat-${TOMCAT_MAJOR}/v${TOMCAT_VERSION}/bin/apache-tomcat-${TOMCAT_VERSION}.tar.gz
ENV TOMCAT_ASC_URL http://archive.apache.org/dist/tomcat/tomcat-${TOMCAT_MAJOR}/v${TOMCAT_VERSION}/bin/apache-tomcat-${TOMCAT_VERSION}.tar.gz.asc

RUN apk add --no-cache --virtual .fetch-deps \
	ca-certificates \
	tar \
	openssl \
	su-exec

RUN apk add --update \
	unzip \
	bash \
	curl \
	tzdata

#install tomcat
RUN set -x \
	&& echo $TIMEZONE > /etc/timezone \
		&&  cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime \

	&& wget -O tomcat.tar.gz "$TOMCAT_TGZ_URL" \
	&& wget -O tomcat.tar.gz.asc "$TOMCAT_ASC_URL" \
	&& gpg --batch --verify tomcat.tar.gz.asc tomcat.tar.gz \
	&& tar -xvf tomcat.tar.gz --strip-components=1 \
	&& rm bin/*.bat \
	&& rm tomcat.tar.gz*

#configure tomcat
#remove unneeded webapps
RUN rm -rf $CATALINA_HOME/webapps/docs \
    $CATALINA_HOME/webapps/examples \
    $CATALINA_HOME/webapps/host-manager \
    $CATALINA_HOME/webapps/manager \

    #remove unneeded files
    && rm -f $CATALINA_HOME/LICENSE \
    $CATALINA_HOME/NOTICE \
    $CATALINA_HOME/RELEASE-NOTES \
    $CATALINA_HOME/RUNNING.txt \

    #Overwrite Server Version
    && mkdir -p $CATALINA_HOME/lib/org/apache/catalina/util \

	#empty ROOT webapp
    && rm -rf $CATALINA_HOME/webapps/ROOT/*

#workaround for allow groovy to run
RUN ln -sf /bin/bash /bin/sh
#install groovy
WORKDIR /opt/
ENV GROOVY_HOME /opt/groovy
ENV PATH ${PATH}:${JAVA_HOME}/bin:${GROOVY_HOME}/bin
ENV GROOVY_VERSION=2.4.8
RUN curl -skLo /opt/groovy.zip https://dl.bintray.com/groovy/maven/apache-groovy-binary-${GROOVY_VERSION}.zip \
        && unzip /opt/groovy.zip \
        && rm -f /opt/groovy.zip \
        && ln -sf /opt/groovy-${GROOVY_VERSION} /opt/groovy

#configure server.xml
RUN groovy /tmp/configureServerXMLforDocker.groovy -path $CATALINA_HOME/conf/server.xml \
    #configure web.xml
    && groovy /tmp/configureWebXMLforDocker.groovy -path $CATALINA_HOME/conf/web.xml \

    #restore default shell
    && ln -sf /bin/busybox /bin/sh

#overwrite some files
ADD ./conf/logging.properties $CATALINA_HOME/conf/
ADD ./conf/ServerInfo.properties $CATALINA_HOME/lib/org/apache/catalina/util/

ADD ./webapps/ROOT/index.html $CATALINA_HOME/webapps/ROOT/
ADD ./webapps/ROOT/error.jsp $CATALINA_HOME/webapps/ROOT/
ADD ./webapps/ROOT/MemoryInfo.jsp $CATALINA_HOME/webapps/ROOT/
ADD ./webapps/ROOT/SystemInfo.jsp $CATALINA_HOME/webapps/ROOT/

#cleanup
RUN apk del \
	bash \
	unzip \
	curl \
	tzdata \
	&& rm -rf /var/cache/apk/* /tmp/* /opt/groovy*

VOLUME /opt/tomcat/logs
WORKDIR /opt/tomcat

ENV JAVA_OPTS -Duser.timezone=Europe/Zurich
ENV CATALINA_OPTS -Dfile.encoding=UTF-8

COPY docker-entrypoint.sh /usr/local/bin/
ENTRYPOINT ["docker-entrypoint.sh"]

EXPOSE 8080
CMD ["catalina.sh", "run"]