Manuel Carrero LegolasVzla

Find the dependent child images on Docker

When you try to remove the docker image with the following command

docker rmi 6795374be8c1

Sometimes you might be facing below error:

Error response from daemon: conflict: unable to delete 6795374be8c1 (cannot be forced) - image has dependent child images

Below is the Docker command line used to find the dependent child images

As a reminder, here are the components in play to run an application:

The cluster:
- Spark Master: coordinates the resources
- Spark Workers: offer resources to run the applications
The application:

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This is a collection of information on PostgreSQL and PostGIS for what I tend to use most often.

	from pyspark.sql.types import *

	# Auxiliar functions
	# Pandas Types -> Sparks Types
	def equivalent_type(f):
	if f == 'datetime64[ns]': return DateType()
	elif f == 'int64': return LongType()
	elif f == 'int32': return IntegerType()
	elif f == 'float64': return FloatType()
	else: return StringType()

	FROM python:alpine3.7

	RUN apk -U add ca-certificates python python-dev py-pip build-base && \
	pip install --upgrade pip && \
	pip install locustio pyzmq && \
	apk del python-dev && \
	rm -r /var/cache/apk/* && \
	mkdir /locust

	WORKDIR /locust

	import os
	import sys
	from pyspark import SparkContext
	from pyspark import SparkConf
	from pyspark.sql import SQLContext
	from pyspark.sql import SparkSession
	from pyspark.sql import DataFrameReader

	conf = SparkConf().setAppName('Simple App')
	sc = SparkContext("local", "Simple App")

	// Demo: http://jsfiddle.net/xuyp8qb5/
	// Note: You need Google Map API Key to run demo; bit.ly/2pBgToW

	var latlng;
	latlng = new google.maps.LatLng(40.730885, -73.997383); // New York, US
	//latlng = new google.maps.LatLng(37.990849233935194, 23.738339349999933); // Athens, GR
	//latlng = new google.maps.LatLng(48.8567, 2.3508); // Paris, FR
	//latlng = new google.maps.LatLng(47.98247572667902, -102.49018710000001); // New Town, US
	//latlng = new google.maps.LatLng(35.44448406385493, 50.99001635390618); // Parand, Tehran, IR
	//latlng = new google.maps.LatLng(34.66431108560504, 50.89113940078118); // Saveh, Markazi, IR