Finish Etherpad dockerfile. Add environment variable and supervisord to run process.

tx-etherpad/Dockerfile

 FROM tx-debian:latest
-MAINTAINER antoinebarbare@gmail.com
+MAINTAINER antoine@barbare.me
 
-#Installation de NodeJS + NPM
-RUN echo "deb http://ftp.us.debian.org/debian wheezy-backports main" >> /etc/apt/sources.list
-RUN DEBIAN_FRONTEND=noninteactive apt-get -y update 
-RUN apt-get install -y curl nodejs-legacy 
+ENV ETHERPAD_VERSION 1.6.0
 
-RUN curl -L --insecure -O https://www.npmjs.org/install.sh \
-    && /bin/bash install.sh \
+RUN apt-get update && \
+    apt-get install -y unzip nodejs-legacy npm mysql-client supervisor && \
+    rm -r /var/lib/apt/lists/*
 
-RUN apt-get install gzip git curl python libssl-dev pkg-config build-essential
+WORKDIR /opt/
 
-#Installation Etherpad
-WORKDIR /opt 
-RUN git clone 'git://github.com/ether/etherpad-lite.git'
-WORKDIR /opt/etherpad-lite
-RUN git checkout develop && rm -Rf src/node_modules
+RUN curl -SL \
+    https://github.com/ether/etherpad-lite/archive/${ETHERPAD_VERSION}.zip \
+    > etherpad.zip && unzip etherpad && rm etherpad.zip && \
+    mv etherpad-lite-${ETHERPAD_VERSION} etherpad-lite
 
-ADD add/settings.json /opt/etherpad-lite/settings.json
+WORKDIR etherpad-lite
 
 #First starting of services
-RUN /opt/etherpad-lite/bin/installDeps.sh
+RUN bin/installDeps.sh && rm settings.json
+RUN ln -s var/settings.json settings.json
 
-EXPOSE 80
+#Copy configuration
+COPY add/entrypoint.sh /entrypoint.sh
+COPY add/supervisord.conf /etc/supervisord.conf
+
+RUN chmod +x /entrypoint.sh
+
+#Set settings based on evironement variables
+ENTRYPOINT ["/entrypoint.sh"]
 
-CMD /opt/etherpad-lite/bin/run.sh --root
+#Start Etherpad with supervisor
+CMD /usr/bin/supervisord -c /etc/supervisord.conf
+
+EXPOSE 80
+VOLUME /opt/etherpad-lite/var

tx-etherpad/add/entrypoint.sh

+#!/bin/bash
+set -e
+
+if [ -z "$MYSQL_PORT_3306_TCP_ADDR" ]; then
+	echo >&2 'error: missing MYSQL_PORT_3306_TCP environment variable'
+	echo >&2 '  Did you forget to --link some_mysql_container:mysql ?'
+	exit 1
+fi
+
+# if we're linked to MySQL, and we're using the root user, and our linked
+# container has a default "root" password set up and passed through... :)
+: ${ETHERPAD_DB_USER:=root}
+if [ "$ETHERPAD_DB_USER" = 'root' ]; then
+	: ${ETHERPAD_DB_PASSWORD:=$MYSQL_ENV_MYSQL_ROOT_PASSWORD}
+fi
+: ${ETHERPAD_DB_NAME:=etherpad}
+
+ETHERPAD_DB_NAME=$( echo $ETHERPAD_DB_NAME | sed 's/\./_/g' )
+
+if [ -z "$ETHERPAD_DB_PASSWORD" ]; then
+	echo >&2 'error: missing required ETHERPAD_DB_PASSWORD environment variable'
+	echo >&2 '  Did you forget to -e ETHERPAD_DB_PASSWORD=... ?'
+	echo >&2
+	echo >&2 '  (Also of interest might be ETHERPAD_DB_USER and ETHERPAD_DB_NAME.)'
+	exit 1
+fi
+
+: ${ETHERPAD_TITLE:=Etherpad}
+: ${ETHERPAD_PORT:=80}
+: ${ETHERPAD_SESSION_KEY:=$(
+		node -p "require('crypto').randomBytes(32).toString('hex')")}
+
+# Check if database already exists
+RESULT=`mysql -u${ETHERPAD_DB_USER} -p${ETHERPAD_DB_PASSWORD} \
+	-hmysql --skip-column-names \
+	-e "SHOW DATABASES LIKE '${ETHERPAD_DB_NAME}'"`
+
+if [ "$RESULT" != $ETHERPAD_DB_NAME ]; then
+	# mysql database does not exist, create it
+	echo "Creating database ${ETHERPAD_DB_NAME}"
+
+	mysql -u${ETHERPAD_DB_USER} -p${ETHERPAD_DB_PASSWORD} -hmysql \
+	      -e "create database ${ETHERPAD_DB_NAME}"
+fi
+
+if [ ! -f settings.json ]; then
+
+	cat <<- EOF > settings.json
+	{
+	  "title": "${ETHERPAD_TITLE}",
+	  "ip": "0.0.0.0",
+	  "port" :${ETHERPAD_PORT},
+	  "sessionKey" : "${ETHERPAD_SESSION_KEY}",
+	  "dbType" : "mysql",
+	  "dbSettings" : {
+			    "user"    : "${ETHERPAD_DB_USER}",
+			    "host"    : "mysql",
+			    "password": "${ETHERPAD_DB_PASSWORD}",
+			    "database": "${ETHERPAD_DB_NAME}"
+			  },
+	EOF
+
+	if [ $ETHERPAD_ADMIN_PASSWORD ]; then
+
+		: ${ETHERPAD_ADMIN_USER:=admin}
+
+		cat <<- EOF >> settings.json
+		  "users": {
+		    "${ETHERPAD_ADMIN_USER}": {
+		      "password": "${ETHERPAD_ADMIN_PASSWORD}",
+		      "is_admin": true
+		    }
+		  },
+		EOF
+	fi
+
+	cat <<- EOF >> settings.json
+	}
+	EOF
+fi
+
+exec "$@"

tx-etherpad/add/supervisord.conf

+[supervisord]
+nodaemon=true
+
+[program:etherpad]
+command=/bin/bash -c "/opt/etherpad-lite/bin/run.sh --root"