Dockerfile is an actively used programming language created in 2013.

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  • Dockerfile ranks in the top 50% of languages
  • the Dockerfile website
  • Dockerfile first appeared in 2013
  • file extensions for Dockerfile include dockerfile
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Example code from Linguist:

# This file describes the standard way to build Docker, using docker
docker-version 0.4.2
from	ubuntu:12.04
maintainer	Solomon Hykes <>
# Build dependencies
run	apt-get install -y -q curl
run	apt-get install -y -q git
# Install Go
run	curl -s | tar -v -C /usr/local -xz
env	PATH	/usr/local/go/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
env	GOPATH	/go
run	cd /tmp && echo 'package main' > t.go && go test -a -i -v
# Download dependencies
run REV=27435c699;		 git clone http://$PKG /go/src/$PKG && cd /go/src/$PKG && git checkout -f $REV
run REV=708054d61e5; git clone http://$PKG /go/src/$PKG && cd /go/src/$PKG && git checkout -f $REV
run REV=9b36453141c;	 git clone http://$PKG /go/src/$PKG && cd /go/src/$PKG && git checkout -f $REV
# Run dependencies
run	apt-get install -y iptables
# lxc requires updating ubuntu sources
run	echo 'deb precise main universe' > /etc/apt/sources.list
run	apt-get update
run	apt-get install -y lxc
run	apt-get install -y aufs-tools
# Upload docker source
add	.       /go/src/
# Build the binary
run	cd /go/src/ && go install -ldflags "-X main.GITCOMMIT '??' -d -w"
env	PATH	/usr/local/go/bin:/go/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
cmd	["docker"]

Last updated August 25th, 2019