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the docker image can be successfully built
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‎docker.logging.properties

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# Copyright 2017 Google Inc. All Rights Reserved.
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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handlers = java.util.logging.ConsoleHandler
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.handlers = java.util.logging.ConsoleHandler
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############################################################
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# Handler specific properties.
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# Describes specific configuration info for Handlers.
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############################################################
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java.util.logging.ConsoleHandler.level = FINE
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java.util.logging.ConsoleHandler.formatter = org.apache.juli.OneLineFormatter
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############################################################
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# Facility specific properties.
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# Provides extra control for each logger.
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############################################################
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org.apache.catalina.core.ContainerBase.[Catalina].[localhost].level = INFO
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org.apache.catalina.core.ContainerBase.[Catalina].[localhost].handlers = java.util.logging.ConsoleHandler
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org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].level = INFO
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org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager].handlers = java.util.logging.ConsoleHandler
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org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].level = INFO
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org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager].handlers = java.util.logging.ConsoleHandler

‎dockerfile

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FROM maven:latest as builder
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COPY ./ /opengrok-source
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WORKDIR /opengrok-source
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RUN apt-get update && apt-get install -y python3 python3-venv
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RUN mvn -f pom.xml clean package -DskipTests=true
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RUN cp `ls -t distribution/target/*.tar.gz | head -n1 |awk '{printf("%s",$0)}'` /opengrok.tar.gz
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FROM tomcat:9-jre8
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LABEL maintainer "[email protected]"
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# prepare OpenGrok binaries and directories
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COPY --from=builder opengrok.tar.gz /opengrok.tar.gz
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RUN mkdir -p /opengrok /var/opengrok/etc /opengrok/data /opengrok/src && \
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tar -zxvf /opengrok.tar.gz -C /opengrok --strip-components 1 && \
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rm -f /opengrok.tar.gz
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# install dependencies
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RUN apt-get update && apt-get install -y git subversion mercurial unzip inotify-tools python3 python3-pip && \
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python3 -m pip install /opengrok/tools/opengrok-tools*
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# compile and install universal-ctags
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RUN apt-get install -y pkg-config autoconf build-essential && git clone https://github.com/universal-ctags/ctags /root/ctags && \
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cd /root/ctags && ./autogen.sh && ./configure && make && make install && \
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apt-get remove -y autoconf build-essential && apt-get -y autoremove && apt-get -y autoclean && \
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cd /root && rm -rf /root/ctags
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# environment variables
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ENV SRC_ROOT /opengrok/src
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ENV DATA_ROOT /opengrok/data
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ENV OPENGROK_WEBAPP_CONTEXT /
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ENV OPENGROK_TOMCAT_BASE /usr/local/tomcat
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ENV CATALINA_HOME /usr/local/tomcat
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ENV PATH $CATALINA_HOME/bin:$PATH
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ENV CATALINA_BASE /usr/local/tomcat
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ENV CATALINA_HOME /usr/local/tomcat
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ENV CATALINA_TMPDIR /usr/local/tomcat/temp
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ENV JRE_HOME /usr
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ENV CLASSPATH /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
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# custom deployment to / with redirect from /source
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RUN rm -rf /usr/local/tomcat/webapps/* && \
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opengrok-deploy /opengrok/lib/source.war /usr/local/tomcat/webapps/ROOT.war && \
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mkdir "/usr/local/tomcat/webapps/source" && \
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echo '<% response.sendRedirect("/"); %>' > "/usr/local/tomcat/webapps/source/index.jsp"
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# disable all file logging
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ADD docker.logging.properties /usr/local/tomcat/conf/logging.properties
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RUN sed -i -e 's/Valve/Disabled/' /usr/local/tomcat/conf/server.xml
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# add our scripts
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ADD scripts /scripts
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RUN chmod -R +x /scripts
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# run
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WORKDIR $CATALINA_HOME
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EXPOSE 8080
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CMD ["/scripts/start.sh"]

‎scripts/index.sh

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#!/bin/bash
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LOCKFILE=/var/run/opengrok-indexer
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URI="http://localhost:8080"
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if [ -f "$LOCKFILE" ]; then
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date +"%F %T Indexer still locked, skipping indexing"
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exit 1
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fi
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touch $LOCKFILE
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if [ -z $NOMIRROR ]; then
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date +"%F %T Mirroring starting"
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opengrok-mirror --all --uri "$URI"
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date +"%F %T Mirroring finished"
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fi
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date +"%F %T Indexing starting"
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opengrok-indexer \
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-a /opengrok/lib/opengrok.jar -- \
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-s /opengrok/src \
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-d /opengrok/data \
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-H -P -S -G \
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--leadingWildCards on \
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-W /var/opengrok/etc/configuration.xml \
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-U "$URI" \
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$INDEXER_OPT "$@"
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date +"%F %T Indexing finished"
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rm -f $LOCKFILE

‎scripts/start.sh

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#!/bin/bash
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# default period for reindexing (in minutes)
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if [ -z "$REINDEX" ]; then
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REINDEX=10
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fi
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indexer(){
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# Wait for Tomcat startup.
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date +"%F %T Waiting for Tomcat startup..."
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while [ "`curl --silent --write-out '%{response_code}' -o /dev/null 'http://localhost:8080/'`" == "000" ]; do
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sleep 1;
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done
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date +"%F %T Startup finished"
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if [[ ! -d /opengrok/data/index ]]; then
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# Populate the webapp with bare configuration.
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BODY_INCLUDE_FILE="/opengrok/data/body_include"
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if [[ -f $BODY_INCLUDE_FILE ]]; then
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mv "$BODY_INCLUDE_FILE" "$BODY_INCLUDE_FILE.orig"
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fi
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echo '<p><h1>Waiting on the initial reindex to finish.. Stay tuned !</h1></p>' > "$BODY_INCLUDE_FILE"
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/scripts/index.sh --noIndex
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rm -f "$BODY_INCLUDE_FILE"
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if [[ -f $BODY_INCLUDE_FILE.orig ]]; then
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mv "$BODY_INCLUDE_FILE.orig" "$BODY_INCLUDE_FILE"
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fi
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# Perform initial indexing.
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NOMIRROR=1 /scripts/index.sh
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date +"%F %T Initial reindex finished"
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fi
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# Continue to index every $REINDEX minutes.
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if [ "$REINDEX" == "0" ]; then
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date +"%F %T Automatic reindexing disabled"
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return
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else
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date +"%F %T Automatic reindexing in $REINDEX minutes..."
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fi
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while true; do
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sleep `expr 60 \* $REINDEX`
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/scripts/index.sh
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done
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}
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# Start all necessary services.
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indexer &
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catalina.sh run

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