XDOCKER-8: Also offer an alpine-based image to reduce download size

-> mysql implementation

11/mysql-alpine-tomcat/.env

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+# Default environment values
+XWIKI_VERSION=11.3
+DB_USER=xwiki
+DB_PASSWORD=xwiki
+DB_DATABASE=xwiki
+MYSQL_ROOT_PASSWORD=xwiki

11/mysql-alpine-tomcat/Dockerfile

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+# ---------------------------------------------------------------------------
+# See the NOTICE file distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this software; if not, write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+# ---------------------------------------------------------------------------
+FROM tomcat:8-jre8-alpine
+
+#    ____  ____  ____      ____  _   __        _
+#   |_  _||_  _||_  _|    |_  _|(_) [  |  _   (_)
+#     \ \  / /    \ \  /\  / /  __   | | / ]  __
+#      > `' <      \ \/  \/ /  [  |  | '' <  [  |
+#    _/ /'`\ \_     \  /\  /    | |  | |`\ \  | |
+#   |____||____|     \/  \/    [___][__|  \_][___]
+
+MAINTAINER Vincent Massol <[email protected]>
+
+# Note: when using docker-compose, the ENV values below are overridden from the .env file.
+
+# Install LibreOffice + other tools
+# Note that procps is required to get ps which is used by JODConverter to start LibreOffice
+RUN apk update && \
+  apk --no-cache add \
+    curl \
+    libreoffice \
+    unzip \
+    procps
+
+RUN curl -L -o /mysql-connector-java-5.1.34.jar https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.34/mysql-connector-java-5.1.34.jar
+
+# Install XWiki as the ROOT webapp context in Tomcat
+# Create the Tomcat temporary directory
+# Configure the XWiki permanent directory
+ENV XWIKI_VERSION=11.3
+ENV XWIKI_URL_PREFIX "https://maven.xwiki.org/releases/org/xwiki/platform/xwiki-platform-distribution-war/${XWIKI_VERSION}"
+ENV XWIKI_DOWNLOAD_SHA256 86b68942a8f5c81ffbe8e574d824d570ec5e2992739271c7ec8862148b0e7973
+RUN rm -rf /usr/local/tomcat/webapps/* && \
+  mkdir -p /usr/local/tomcat/temp && \
+  mkdir -p /usr/local/xwiki/data
+
+RUN curl -fSL "${XWIKI_URL_PREFIX}/xwiki-platform-distribution-war-${XWIKI_VERSION}.war" -o xwiki.war
+
+RUN echo "$XWIKI_DOWNLOAD_SHA256  xwiki.war" | sha256sum -c -
+RUN unzip -d /usr/local/tomcat/webapps/ROOT xwiki.war
+RUN rm -f xwiki.war
+
+# Copy the JDBC driver in the XWiki webapp
+RUN cp /mysql-connector-java-*.jar /usr/local/tomcat/webapps/ROOT/WEB-INF/lib/
+
+# Configure Tomcat. For example set the memory for the Tomcat JVM since the default value is too small for XWiki
+COPY tomcat/setenv.sh /usr/local/tomcat/bin/
+
+# Setup the XWiki Hibernate configuration
+COPY xwiki/hibernate.cfg.xml /usr/local/tomcat/webapps/ROOT/WEB-INF/hibernate.cfg.xml
+
+# Set a specific distribution id in XWiki for this docker packaging.
+RUN sed -i 's/<id>org.xwiki.platform:xwiki-platform-distribution-war/<id>org.xwiki.platform:xwiki-platform-distribution-docker/' \
+  /usr/local/tomcat/webapps/ROOT/META-INF/extension.xed
+
+# Add scripts required to make changes to XWiki configuration files at execution time
+# Note: we don't run CHMOD since 1) it's not required since the executabe bit is already set in git and 2) running
+# CHMOD after a COPY will sometimes fail, depending on different host-specific factors (especially on AUFS).
+COPY xwiki/docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+
+# Make the XWiki directory (the permanent directory is included in it) persist on the host (so that it's not recreated
+# across runs)
+VOLUME /usr/local/xwiki
+
+# At this point the image is done and what remains below are the runtime configuration used by the user to configure
+# the container that will be created out of the image. Namely the user can override some environment variables with
+#   docker run -e "var1=val1" -e "var2=val2" ...
+# The supported environment variables that can be overridden are:
+# - DB_USER: the name of the user configured for XWiki in the DB. Default is "xwiki". This is used to configure
+#            xwiki's hibernate.cfg.xml file.
+# - DB_PASSWORD: the password for the user configured for XWiki in the DB. Default is "xwiki". This is used to
+#                configure xwiki's hibernate.cfg.xml file.
+# - DB_DATABASE: the name of the database to use. Default is "xwiki". This is used to configure xwiki's
+#                hibernate.cfg.xml file.
+# - DB_HOST: The name of the host (or docker container) containing the database. Default is "db". This is used to
+#            configure xwiki's hibernate.cfg.xml file.
+
+# Example:
+#   docker run -it -e "DB_USER=xwiki" -e "DB_PASSWORD=xwiki" <imagename>
+
+# Starts XWiki by starting Tomcat. All options passed to "docker run [OPTIONS] IMAGE[:TAG|@DIGEST] [COMMAND] [ARG...]"
+# are also passed to docker-entrypoint.sh. If "xwiki" is passed then XWiki will be configured the first time the
+# container executes and Tomcat will be started. If some other parameter is passed then it'll be executed to comply
+# with best practices defined at https://github.com/docker-library/official-images#consistency.
+ENTRYPOINT ["docker-entrypoint.sh"]
+CMD ["xwiki"]

11/mysql-alpine-tomcat/docker-compose.yml

@@ -0,0 +1,71 @@
+# ---------------------------------------------------------------------------
+# See the NOTICE file distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this software; if not, write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+# ---------------------------------------------------------------------------
+version: '2'
+networks:
+  bridge:
+    driver: bridge
+services:
+  # The container that runs XWiki + Tomcat
+  web:
+    build: .
+    container_name: xwiki-mysql-alpine-tomcat-web
+    depends_on:
+      - db
+    ports:
+      - "8080:8080"
+    # Default values defined in .env file.
+    # The DB_USER/DB_PASSWORD/DB_DATABASE/DB_HOST variables are used in the hibernate.cfg.xml file.
+    environment:
+      - XWIKI_VERSION=${XWIKI_VERSION}
+      - DB_USER=${DB_USER}
+      - DB_PASSWORD=${DB_PASSWORD}
+      - DB_DATABASE=${DB_DATABASE}
+      - DB_HOST=xwiki-mysql-db
+    # Provide a name instead of an auto-generated id for xwiki data (the permanent directory in included in it)
+    # configured in the Dockerfile, to make it simpler to identify in 'docker volume ls'.
+    volumes:
+      - xwiki-data:/usr/local/xwiki
+    networks:
+      - bridge
+  # The container that runs the database (mysql)
+  db:
+    image: "mysql:5.7"
+    container_name: xwiki-mysql-db
+    # - We provide a xwiki.cnf file in order to configure the mysql db to support UTF8 and be case-insensitive
+    # We have to do it here since we use an existing image and that's how this image allows customizations.
+    # See https://hub.docker.com/_/mysql/ for more details.
+    # - Provide a name instead of an auto-generated id for the mysql data, to make it simpler to identify in
+    # 'docker volume ls'
+    volumes:
+      - ./mysql/xwiki.cnf:/etc/mysql/conf.d/xwiki.cnf
+      - mysql-data:/var/lib/mysql
+    # Configure the MySQL database and create a user with provided name/password.
+    # See https://hub.docker.com/_/mysql/ for more details.
+    # Default values defined in .env file.
+    environment:
+      - MYSQL_ROOT_PASSWORD=${MYSQL_ROOT_PASSWORD}
+      - MYSQL_USER=${DB_USER}
+      - MYSQL_PASSWORD=${DB_PASSWORD}
+      - MYSQL_DATABASE=${DB_DATABASE}
+    networks:
+      - bridge
+volumes:
+  mysql-data: {}
+  xwiki-data: {}

11/mysql-alpine-tomcat/mysql/xwiki.cnf

@@ -0,0 +1,31 @@
+# ---------------------------------------------------------------------------
+# See the NOTICE file distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this software; if not, write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+# ---------------------------------------------------------------------------
+
+[client]
+default-character-set = utf8
+
+[mysqld]
+character-set-server = utf8
+collation-server = utf8_bin
+explicit_defaults_for_timestamp = 1
+
+[mysql]
+default-character-set = utf8
+

11/mysql-alpine-tomcat/tomcat/setenv.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+# ---------------------------------------------------------------------------
+# See the NOTICE file distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation; either version 2.1 of
+# the License, or (at your option) any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this software; if not, write to the Free
+# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+# ---------------------------------------------------------------------------
+
+# We're making the following changes to the default:
+# * Adding more memory (default is 512MB which is not enough for XWiki)
+# * By default, Tomcat does not allow the usage of encoded slash '%2F' and backslash '%5C' in URLs, as noted in
+#   https://tomcat.apache.org/security-6.html#Fixed_in_Apache_Tomcat_6.0.10. We want to allow for them as it's useful to
+#   be able to have '/' and '' in wiki page names.
+# * On some system /dev/random is slow to init leading to a slow Tomcat and thus Xwiki startup.
+
+# Users can override these values by setting the JAVA_OPTS environment variable. For example:
+# -e JAVA_OPTS="-Xmx2048m"
+
+XMX="-Xmx1024m"
+ALLOW_ENCODED_SLASH="-Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true"
+ALLOW_BACKSLASH="-Dorg.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH=true"
+SECURERANDOM="-Djava.security.egd=file:/dev/./urandom"
+
+if [[ ! -z "$JAVA_OPTS" ]]; then
+  if [[ ! $JAVA_OPTS =~ .*-Xmx[0-9]+.* ]]; then
+    JAVA_OPTS="$JAVA_OPTS $XMX"
+  fi
+  if [[ ! $JAVA_OPTS =~ .*ALLOW_ENCODED_SLASH.* ]]; then
+    JAVA_OPTS="$JAVA_OPTS $ALLOW_ENCODED_SLASH"
+  fi
+  if [[ ! $JAVA_OPTS =~ .*ALLOW_BACKSLASH.* ]]; then
+    JAVA_OPTS="$JAVA_OPTS $ALLOW_BACKSLASH"
+  fi
+  if [[ ! $JAVA_OPTS =~ .*java\.security\.egd.* ]]; then
+    JAVA_OPTS="$JAVA_OPTS $SECURERANDOM"
+  fi
+else
+  JAVA_OPTS="$XMX $ALLOW_ENCODED_SLASH $ALLOW_BACKSLASH $SECURERANDOM"
+fi
+
+export JAVA_OPTS