saissemet · March 4, 2021 10:08
diff --git a/Create and push a Docker image from scratch b/Create and push a Docker image from scratch
 ## In this tutorial we are creating a simple Apache2 docker image. The main ideia is to create and push a docker image from scratch. ##

 ## Creating a local directory to store the configuration files ##
 mkdir myapp
 cd myapp

 ## Creating a "Dockerfile" with the following content ##
 nano Dockerfile

 FROM ubuntu:18.04
 MAINTAINER saissemet
 RUN apt-get update && apt-get install -y apache2 && apt-get clean && rm -rf /var/lib/apt/lists/*
 ENV APACHE_RUN_USER  www-data
 ENV APACHE_RUN_GROUP www-data
 ENV APACHE_LOG_DIR   /var/log/apache2
 ENV APACHE_PID_FILE  /var/run/apache2/apache2.pid
 ENV APACHE_RUN_DIR   /var/run/apache2
 ENV APACHE_LOCK_DIR  /var/lock/apache2
 ENV APACHE_LOG_DIR   /var/log/apache2
 RUN mkdir -p $APACHE_RUN_DIR
 RUN mkdir -p $APACHE_LOCK_DIR
 RUN mkdir -p $APACHE_LOG_DIR
 COPY index.html /var/www/html
 EXPOSE 80
 CMD ["/usr/sbin/apache2", "-D", "FOREGROUND"]

 ## Creating a "index.html" with the following content ##
 nano index.html

 <!DOCTYPE html>
 <html lang="en">
 <head>
 <meta charset="UTF-8">
 <title>Padre Messias II</title>
 </head>
 <body>
 <h1>"Don't play, pray!" - Padre Messias II</h1>
 </body>
 </html>

 ## Update and upgrade the O.S.'s software ##
 apt update && apt upgrade -y

 ## Installing docker ##
 apt install docker.io

 ## Building the docker image. ##
 ## The name you choose in this step is'nt the one you will use to push your image ##
 docker build -t [DOCKER_IMAGE_NAME] .

 ## Testing the image. ##
 ## The '-d' variable runs the container in the background. ##
 ## You can change the first port of the command. The second is the one the images uses. ##
 docker run -d -p 80:80 [DOCKER_IMAGE_NAME]

 ## At this point, you should be able to open a browser page with your IP and see a html page ##

 ## Now we are moving on to push the image we just created. To start, you need to set up an account at the DockerHub (https://hub.docker.com/) ##
 ## After that, you can get back to the command line ##

 ## Login your DockerHub account ##
 docker login

 ## Check you docker images and grab the image ID ##
 docker images

 ## Tag your image. This tag will be used to push and pull your image. ##
 docker tag [IMAGE_ID] [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]

 ## Push your image to the DockerHub repository ##
 docker push [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]

 ## To test, go to some other computer and try this. ##

 ## Pull the docker image ##
 docker pull [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]

 ## Run the docker image and check if it's working ##
 ## The '-d' variable runs the container in the background. ##
 ## You can change the first port of the command. The second is the one the images uses. ##
 docker run -d -p 80:80 [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]
	## In this tutorial we are creating a simple Apache2 docker image. The main ideia is to create and push a docker image from scratch. ##

	## Creating a local directory to store the configuration files ##
	mkdir myapp
	cd myapp

	## Creating a "Dockerfile" with the following content ##
	nano Dockerfile

	FROM ubuntu:18.04
	MAINTAINER saissemet
	RUN apt-get update && apt-get install -y apache2 && apt-get clean && rm -rf /var/lib/apt/lists/*
	ENV APACHE_RUN_USER www-data
	ENV APACHE_RUN_GROUP www-data
	ENV APACHE_LOG_DIR /var/log/apache2
	ENV APACHE_PID_FILE /var/run/apache2/apache2.pid
	ENV APACHE_RUN_DIR /var/run/apache2
	ENV APACHE_LOCK_DIR /var/lock/apache2
	ENV APACHE_LOG_DIR /var/log/apache2
	RUN mkdir -p $APACHE_RUN_DIR
	RUN mkdir -p $APACHE_LOCK_DIR
	RUN mkdir -p $APACHE_LOG_DIR
	COPY index.html /var/www/html
	EXPOSE 80
	CMD ["/usr/sbin/apache2", "-D", "FOREGROUND"]

	## Creating a "index.html" with the following content ##
	nano index.html

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Padre Messias II</title>
	</head>
	<body>
	<h1>"Don't play, pray!" - Padre Messias II</h1>
	</body>
	</html>

	## Update and upgrade the O.S.'s software ##
	apt update && apt upgrade -y

	## Installing docker ##
	apt install docker.io

	## Building the docker image. ##
	## The name you choose in this step is'nt the one you will use to push your image ##
	docker build -t [DOCKER_IMAGE_NAME] .

	## Testing the image. ##
	## The '-d' variable runs the container in the background. ##
	## You can change the first port of the command. The second is the one the images uses. ##
	docker run -d -p 80:80 [DOCKER_IMAGE_NAME]

	## At this point, you should be able to open a browser page with your IP and see a html page ##

	## Now we are moving on to push the image we just created. To start, you need to set up an account at the DockerHub (https://hub.docker.com/) ##
	## After that, you can get back to the command line ##

	## Login your DockerHub account ##
	docker login

	## Check you docker images and grab the image ID ##
	docker images

	## Tag your image. This tag will be used to push and pull your image. ##
	docker tag [IMAGE_ID] [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]

	## Push your image to the DockerHub repository ##
	docker push [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]

	## To test, go to some other computer and try this. ##

	## Pull the docker image ##
	docker pull [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]

	## Run the docker image and check if it's working ##
	## The '-d' variable runs the container in the background. ##
	## You can change the first port of the command. The second is the one the images uses. ##
	docker run -d -p 80:80 [USERNAME]/[SOME_RANDOM_NAME]:[SOME_COOL_TAG]