Added an entrypoint script to the backup service

Author: marclennox

.gitignore

@@ -0,0 +1 @@
+.ruby-version

README.md

@@ -1,2 +1,4 @@
-docker-images
+Docker Images
 =============
+
+These are a collection of Docker images I use to deploy and support various projects I am working on.

backup-service/Dockerfile

@@ -81,11 +81,17 @@ RUN gem install backup rubygems-update whenever --no-ri --no-rdoc
 # Clean up APT when done.
 RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+# Add the entrypoint script
+ADD ./entrypoint /opt/backups/entrypoint
+
 # Define working directory.
-WORKDIR /data
+WORKDIR /opt/backups
 
 # Define mountable directories.
 VOLUME ["/data"]
 
+# Define entrypoint script.
+ENTRYPOINT ["./entrypoint"]
+
 # Use baseimage-docker's init system.
 CMD ["/sbin/my_init"]

backup-service/entrypoint

@@ -0,0 +1,38 @@
+#!/bin/bash
+set -e
+
+# Set environment variables
+export BACKUP_DATA_DIR="${BACKUP_DATA_DIR:-`pwd`}"
+export BACKUP_CONFIG_DIR="${BACKUP_CONFIG_DIR:-`pwd`}"
+export BACKUP_COMMAND="${1:-init}"
+
+# Make sure the specified directories are present
+mkdir -p "${BACKUP_DATA_DIR}"
+mkdir -p "${BACKUP_CONFIG_DIR}"
+
+# Check for a known command
+BACKUP_COMMAND=$1
+case "${BACKUP_COMMAND}" in
+  "trigger" )
+    shift
+    TASK=$1 && shift
+    # Execute the backup command
+    command="exec backup perform --config-file=${BACKUP_CONFIG_DIR}/config.rb --root-path=${BACKUP_DATA_DIR} --trigger ${TASK}"
+    ;;
+  "schedule"|"scheduler"|"cron" )
+    shift
+    # Write the crontab entries from the whenever schedule
+    whenever --load-file "${BACKUP_CONFIG_DIR}/schedule.rb" > "/etc/cron.d/backups"
+    # Call the phusion baseimage init docker to start the various daemons including crond
+    command="/sbin/my_init"
+    ;;
+  "init" )
+    # Call the phusion baseimage init docker to start the various daemons including crond
+    command="/sbin/my_init"
+    ;;
+  * )
+    command="$@"
+    ;;
+esac
+
+${command}

rails-app-base/Dockerfile

@@ -76,8 +76,8 @@ RUN gem install bundler rubygems-update --no-ri --no-rdoc
 # Clean up APT when done.
 RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Define mountable directories.
-VOLUME ["/data"]
-
 # Define working directory.
 WORKDIR /data
+
+# Define mountable directories.
+VOLUME ["/data"]

redis-commander/Dockerfile

@@ -37,12 +37,12 @@ RUN npm install -g redis-commander
 # Clean up APT when done.
 RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Define mountable directories.
-VOLUME ["/data"]
-
 # Define working directory.
 WORKDIR /data
 
+# Define mountable directories.
+VOLUME ["/data"]
+
 # Define default command.
 ENTRYPOINT ["redis-commander"]
 

wordpress-base/Dockerfile

@@ -31,12 +31,12 @@ RUN \
 # Clean up APT when done.
 RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Define mountable directories.
-VOLUME ["/data"]
-
 # Define working directory.
 WORKDIR /data
 
+# Define mountable directories.
+VOLUME ["/data"]
+
 # Define default command.
 CMD ["php5-fpm", "-c", "/etc/php5/fpm/php.ini", "-y", "/etc/php5/fpm/php-fpm.conf", "-R"]