Derek Chia DerekChia

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DerekChia / Cannot interpret 'datetime64[ns, UTC]' as a data type.ipynb

Last active November 22, 2022 06:02

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DerekChia / Dockerfile ONBUILD build output

Last active December 26, 2021 18:19

	$ docker build --no-cache -t demo-onbuild .

	### REMOVED ###
	Step 6/11 : RUN echo "First stage build time:"; env \| grep VAR_
	---> Running in 2059bd2e7860
	First stage build time:
	VAR_ARG=arg_value
	VAR_ENV=env_value
	Removing intermediate container 2059bd2e7860
	---> ec2a853d2c02

DerekChia / Dockerfile ONBUILD

Created December 26, 2021 18:12

	# First stage
	FROM debian as base
	ENV VAR_ENV=env_value
	ARG VAR_ARG=arg_value
	ONBUILD ENV VAR_ENV_ONBUILD=onbuild_env_value
	ONBUILD ARG VAR_ARG_ONBUILD=onbuild_arg_value
	RUN echo "First stage build time:"; env \| grep VAR_
	# Second stage
	FROM base
	RUN echo "Second stage build time:"; env \| grep VAR_

DerekChia / Dockerfile build output with build-arg

Last active December 26, 2021 18:32

	$ docker build --build-arg SOME_VAR=new-value --no-cache -t demo .

	### REMOVED ###
	Step 2/5 : ENV SOME_VAR=env-value
	---> Running in 10d7cb325994
	Removing intermediate container 10d7cb325994
	---> dcab47c67952
	Step 3/5 : ARG SOME_VAR=arg-value
	---> Running in 265c48974673
	Removing intermediate container 265c48974673

DerekChia / Dockerfile build output

Last active December 26, 2021 18:32

	$ docker build --no-cache -t demo .

	### REMOVED ###
	Step 2/5 : ENV SOME_VAR=env-value
	---> Running in ed8e108898e4
	Removing intermediate container ed8e108898e4
	---> 43da9e8e6dd6
	Step 3/5 : ARG SOME_VAR=arg-value
	---> Running in fb03d6097fb1
	Removing intermediate container fb03d6097fb1

DerekChia / Dockerfile

Created December 26, 2021 15:38

	FROM ubuntu
	ENV SOME_VAR=env-value
	ARG SOME_VAR=arg-value
	RUN echo "Build-time: SOME_VAR is set to ${SOME_VAR:-}"
	CMD ["bash", "-c", "echo Run-time: SOME_VAR is set to ${SOME_VAR:-}"]

DerekChia / docker-compose.yml

Created December 26, 2021 14:03

Start a container, read and print the environment variable. Defaults to ONE if VARIABLE_ONE is not overridden

	version: "3"
	services:
	hello_world:
	container_name: ubuntu
	image: ubuntu:latest
	command: '/bin/sh -c "echo ${VARIABLE_ONE:-ONE}"'

DerekChia / docker-compose.yml

Created December 26, 2021 10:51

Start a container, read and print the environment variable passed in via "environment:"

	version: "3"
	services:
	hello_world:
	container_name: ubuntu
	image: ubuntu:latest
	environment:
	VARIABLE_ONE: ONE
	command: '/bin/sh -c "echo $$VARIABLE_ONE"'

DerekChia / docker-compose.yml

Last active December 26, 2021 10:52

Start a container, read and print the environment variable stored in host system

	version: "3"
	services:
	hello_world:
	container_name: ubuntu
	image: ubuntu:latest
	command: '/bin/sh -c "echo $$VARIABLE_ONE"'

DerekChia / export VARIABLE_ONE=ONE

Created December 26, 2021 10:03

$ export VARIABLE_ONE=ONE