Taking cues from COmanage script

Dockerfile

@@ -2,7 +2,7 @@ FROM bigfleet/shibboleth_sp
 
 # Define args and set a default value
 ARG maintainer=tier
-ARG imagename=shibboleth_sp
+ARG imagename=grouper
 ARG version=2.3.0
 
 MAINTAINER $maintainer
@@ -30,7 +30,7 @@ RUN mkdir -p /opt/grouper/$VERSION \
       && yum clean all
 
 # Add starters and installers
-ADD ./container_files /root
+ADD ./container_files /opt
 COPY grouper.installer.properties /opt/grouper/$version
 
 # The installer creates a HSQL DB which we ignore later
@@ -41,4 +41,4 @@ VOLUME /opt/grouper/2.3.0/apache-tomcat-$TOMCAT_VERSION/logs
 
 EXPOSE 8080 8009 8005
 
-CMD ["/root/container_start.sh"]
+CMD ["/opt/bin/container_start.sh"]

container_files/bin/check.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+log="/tmp/shib.log"
+
+cd /opt/grouper/2.3.0/grouper.apiBinary-2.3.0 && GROUPER_HOME=/opt/grouper/2.3.0/grouper.apiBinary-2.3.0 bin/gsh.sh -check

container_files/container_start.sh → container_files/bin/main.sh

@@ -10,9 +10,9 @@ if [ -e "/tmp/firsttimerunning" ]; then
 
     set -e
 
-    /root/configure.sh
-    
-    cd /opt/grouper/2.3.0/grouper.apiBinary-2.3.0 && GROUPER_HOME=/opt/grouper/2.3.0/grouper.apiBinary-2.3.0 bin/gsh.sh -check
+    /opt/bin/configure.sh
+
+    /opt/bin/check.sh
 
     rm -f /tmp/firsttimerunning 
 else

container_files/bin/start.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+log="/tmp/start.log"
+
+if [ -z ${COMPOSE+x} ]
+then
+  echo "Not composed so not waiting for MariaDB: " > $log
+  /opt/bin/main.sh
+  laststatus="$?"
+  echo "Not composed status: $laststatus"
+  if [ "$laststatus" != "0" ]; then
+      echo "Not composed non-zero exit status: $laststatus" >> $log
+      echo "Not composed non-zero exit status: $laststatus"
+      exit 1
+  else
+      exit 0
+  fi
+else
+  echo "Composed so waiting for MariaDB: " > $log
+  /opt/wait-for-it/wait-for-it.sh $MYSQL_HOST:3306 -t 60 --strict --  /opt/bin/main.sh
+  laststatus="$?"
+  echo "Composed status: $laststatus"
+  if [ "$laststatus" != "0" ]; then
+      echo "Composed non-zero exit status: $laststatus" >> $log
+      echo "Composed non-zero exit status: $laststatus"
+      exit 1
+  else
+      exit 0
+  fi
+fi

container_files/wait-for-it/LICENSE

@@ -0,0 +1,20 @@
+The MIT License (MIT)
+Copyright (c) 2016 Giles Hall
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

container_files/wait-for-it/README.md

@@ -0,0 +1,59 @@
+`wait-for-it.sh` is a pure bash script that will wait on the availability of a host and TCP port.  It is useful for synchronizing the spin-up of interdependent services, such as linked docker containers.  Since it is a pure bash script, it does not have any external dependencies.
+
+## Usage
+
+```
+wait-for-it.sh host:port [-s] [-t timeout] [-- command args]
+-h HOST | --host=HOST       Host or IP under test
+-p PORT | --port=PORT       TCP port under test
+                            Alternatively, you specify the host and port as host:port
+-s | --strict               Only execute subcommand if the test succeeds
+-q | --quiet                Don't output any status messages
+-t TIMEOUT | --timeout=TIMEOUT
+                            Timeout in seconds, zero for no timeout
+-- COMMAND ARGS             Execute command with args after the test finishes
+```
+
+## Examples
+
+For example, let's test to see if we can access port 80 on www.google.com, and if it is available, echo the message `google is up`.
+
+```
+$ ./wait-for-it.sh www.google.com:80 -- echo "google is up"
+wait-for-it.sh: waiting 15 seconds for www.google.com:80
+wait-for-it.sh: www.google.com:80 is available after 0 seconds
+google is up
+```
+
+You can set your own timeout with the `-t` or `--timeout=` option.  Setting the timeout value to 0 will disable the timeout:
+
+```
+$ ./wait-for-it.sh -t 0 www.google.com:80 -- echo "google is up"
+wait-for-it.sh: waiting for www.google.com:80 without a timeout
+wait-for-it.sh: www.google.com:80 is available after 0 seconds
+google is up
+```
+
+The subcommand will be executed regardless if the service is up or not.  If you wish to execute the subcommand only if the service is up, add the `--strict` argument. In this example, we will test port 81 on www.google.com which will fail:
+
+```
+$ ./wait-for-it.sh www.google.com:81 --timeout=1 --strict -- echo "google is up"
+wait-for-it.sh: waiting 1 seconds for www.google.com:81
+wait-for-it.sh: timeout occurred after waiting 1 seconds for www.google.com:81
+wait-for-it.sh: strict mode, refusing to execute subprocess
+```
+
+If you don't want to execute a subcommand, leave off the `--` argument.  This way, you can test the exit condition of `wait-for-it.sh` in your own scripts, and determine how to proceed:
+
+```
+$ ./wait-for-it.sh www.google.com:80
+wait-for-it.sh: waiting 15 seconds for www.google.com:80
+wait-for-it.sh: www.google.com:80 is available after 0 seconds
+$ echo $?
+0
+$ ./wait-for-it.sh www.google.com:81
+wait-for-it.sh: waiting 15 seconds for www.google.com:81
+wait-for-it.sh: timeout occurred after waiting 15 seconds for www.google.com:81
+$ echo $?
+124
+```

container_files/wait-for-it/wait-for-it.sh

@@ -0,0 +1,161 @@
+#!/usr/bin/env bash
+#   Use this script to test if a given TCP host/port are available
+
+cmdname=$(basename $0)
+
+echoerr() { if [[ $QUIET -ne 1 ]]; then echo "$@" 1>&2; fi }
+
+usage()
+{
+    cat << USAGE >&2
+Usage:
+    $cmdname host:port [-s] [-t timeout] [-- command args]
+    -h HOST | --host=HOST       Host or IP under test
+    -p PORT | --port=PORT       TCP port under test
+                                Alternatively, you specify the host and port as host:port
+    -s | --strict               Only execute subcommand if the test succeeds
+    -q | --quiet                Don't output any status messages
+    -t TIMEOUT | --timeout=TIMEOUT
+                                Timeout in seconds, zero for no timeout
+    -- COMMAND ARGS             Execute command with args after the test finishes
+USAGE
+    exit 1
+}
+
+wait_for()
+{
+    if [[ $TIMEOUT -gt 0 ]]; then
+        echoerr "$cmdname: waiting $TIMEOUT seconds for $HOST:$PORT"
+    else
+        echoerr "$cmdname: waiting for $HOST:$PORT without a timeout"
+    fi
+    start_ts=$(date +%s)
+    while :
+    do
+        (echo > /dev/tcp/$HOST/$PORT) >/dev/null 2>&1
+        result=$?
+        if [[ $result -eq 0 ]]; then
+            end_ts=$(date +%s)
+            echoerr "$cmdname: $HOST:$PORT is available after $((end_ts - start_ts)) seconds"
+            break
+        fi
+        sleep 1
+    done
+    return $result
+}
+
+wait_for_wrapper()
+{
+    # In order to support SIGINT during timeout: http://unix.stackexchange.com/a/57692
+    if [[ $QUIET -eq 1 ]]; then
+        timeout $TIMEOUT $0 --quiet --child --host=$HOST --port=$PORT --timeout=$TIMEOUT &
+    else
+        timeout $TIMEOUT $0 --child --host=$HOST --port=$PORT --timeout=$TIMEOUT &
+    fi
+    PID=$!
+    trap "kill -INT -$PID" INT
+    wait $PID
+    RESULT=$?
+    if [[ $RESULT -ne 0 ]]; then
+        echoerr "$cmdname: timeout occurred after waiting $TIMEOUT seconds for $HOST:$PORT"
+    fi
+    return $RESULT
+}
+
+# process arguments
+while [[ $# -gt 0 ]]
+do
+    case "$1" in
+        *:* )
+        hostport=(${1//:/ })
+        HOST=${hostport[0]}
+        PORT=${hostport[1]}
+        shift 1
+        ;;
+        --child)
+        CHILD=1
+        shift 1
+        ;;
+        -q | --quiet)
+        QUIET=1
+        shift 1
+        ;;
+        -s | --strict)
+        STRICT=1
+        shift 1
+        ;;
+        -h)
+        HOST="$2"
+        if [[ $HOST == "" ]]; then break; fi
+        shift 2
+        ;;
+        --host=*)
+        HOST="${1#*=}"
+        shift 1
+        ;;
+        -p)
+        PORT="$2"
+        if [[ $PORT == "" ]]; then break; fi
+        shift 2
+        ;;
+        --port=*)
+        PORT="${1#*=}"
+        shift 1
+        ;;
+        -t)
+        TIMEOUT="$2"
+        if [[ $TIMEOUT == "" ]]; then break; fi
+        shift 2
+        ;;
+        --timeout=*)
+        TIMEOUT="${1#*=}"
+        shift 1
+        ;;
+        --)
+        shift
+        CLI="$@"
+        break
+        ;;
+        --help)
+        usage
+        ;;
+        *)
+        echoerr "Unknown argument: $1"
+        usage
+        ;;
+    esac
+done
+
+if [[ "$HOST" == "" || "$PORT" == "" ]]; then
+    echoerr "Error: you need to provide a host and port to test."
+    usage
+fi
+
+TIMEOUT=${TIMEOUT:-15}
+STRICT=${STRICT:-0}
+CHILD=${CHILD:-0}
+QUIET=${QUIET:-0}
+
+if [[ $CHILD -gt 0 ]]; then
+    wait_for
+    RESULT=$?
+    exit $RESULT
+else
+    if [[ $TIMEOUT -gt 0 ]]; then
+        wait_for_wrapper
+        RESULT=$?
+    else
+        wait_for
+        RESULT=$?
+    fi
+fi
+
+if [[ $CLI != "" ]]; then
+    if [[ $RESULT -ne 0 && $STRICT -eq 1 ]]; then
+        echoerr "$cmdname: strict mode, refusing to execute subprocess"
+        exit $RESULT
+    fi
+    exec $CLI
+else
+    exit $RESULT
+fi