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All right.

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We have just agreed that the very thrust to small application and run it using technology as container

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and it was the relatively easy all what we did to we actually executed specific file namely Hello de

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Jesus using Node interpreter.

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That's it.

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Now let's create a bit more complicated application with additional NPM package that we will need to

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install into our application locally on our computer.

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And for that we will use comment from docker container.

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Let's do that.

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Let's clear terminal and let's move to our visual studio called Project frost and he'll let me close

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hello do just file and let's create new for the inside of the node folder for that select load folder

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and click on this folder icon and create new folder named express like so and here inside of this folder

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let's create new file indexed the Jesus like so in the Lord Jesus and now let's open up web browser

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and type here in B Jesus dot com and PM in more just stands for note package manager and using NPM you're

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able to install many many different public open source packages and create the applications your obligations

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based on those third party packages.

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Let's switch here for package gold express.

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It is very very popular package.

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Let's click on this first link Express and you'll see that this package is the law that more than 11

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million times every week let's here scroll down and you'll see how to create very simple Express Web

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server.

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And let's use those comments.

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Let's simply copy all of them from this page.

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Copy them.

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Go to our IN THE LARGEST file here in Express folder and paste all files like salt and let's adjust

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this application a bit.

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Let's type here not killer rolled.

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Let's type this Express up was executed by node Jesus container inside of the like Sol was suppressing

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key combination out option Zi to remove horizontal scrolling and let's save the file and notice that

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our application will no listen at port three thousand and that means that we will need to use Port maybe

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if we want to connect to our Express Web Celera from outside and we will do that of course in this lecture.

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Great let's not try to execute this file using the same approach as we used in the previous lecture

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let's go to the terminal and here let's Cydia to express folder because now we allocated ignored folder

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we need to move to express folder City to express let's list files here and yes I see single in the

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largest file here and let's now use same command as we used before.

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Let me go to this comment in history and the let's adjusted and instead of hello de Jesus let's type

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in De Jesus and let's try to run this application using the same comment as it used for hello world

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application let's press enter and I see error cannot find module Express and the reason for that is

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very simple we need theorist don't look at this Express module from NPM and only afterwards run our

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application otherwise you'll get such errors module not found and again if I'll go back to this application

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in a visual studio called you'll see that we're actually require external module express here is this

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light responsible for that and that's why thrust we need to run npm install command for our application

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and if I'll try to do it locally on my computer using simply npm install command I'll get commanded

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found and VM because there was no no GST or NPM installed on my local computer and that's why we need

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some how Iran and install a command using not Jesus dawg our container question how are we able to do

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so.

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We are able to do so using the same approach as we used in the previous comment in the previous comment.

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We have overread read the default comment and here was custom comment that was executed after the start

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of this container and no we wanted to run npm install command and for that we don't simply replace this

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command note in the Logies with npm install command.

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But please note that all those two options will need to remain in place because we need to run in being

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install let's say in our local folder on our computer.

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Let's try it.

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Let me remove node in the genus and type here npm install and let's press enter and now I see some meaningful

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output after entering this command and it seems that the Lord container tried to install packages but

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do we see running.

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No such file or directory not able to open file package the Jason inside of the up folder inside of

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the container and that actually means that we need to first initialize our no Jesus project using NPM

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in need.

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Command and answer or some prompts and afterwards node container will create baggage.

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But Jason the file was told it was merely a terminal and the here.

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Let's go to this command and instead of embedding install Let's type NPM in it like so and now with

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selection.

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This prompt this utility will walk through creation of the package the gist on file and afterwards we

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see prompt to name our application or a package.

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And here is the full name up but afterwards this script actually terminated and the reason for that

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is that we cannot connect it to the end of this process and you may guess that we need to add Dash 8

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the options in order to be able to proceed with this interactive conversation with no GSM container.

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Let me clear a terminal and move to this command back and here let's add that a D.

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Options and make sure that you add those options somewhere before.

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Name of the node image.

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Let's browse Anton and now I am able to proceed with those prompts.

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I am happy with this default application name version is 1 0 0 0.

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Let's press Enter description is empty.

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Again I'll use the default values everywhere and re point in the Jesus death command to get repository

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keywords altar license ISC.

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And if I am happy with all those settings I could do press enter and file baggage.

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The Jason the file should not be created in our local folder Let's verify it allows.

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And yes I see actually two files package the Jason and package look.

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The Jason.

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I will not explain in details what this package looked the Jason File means but if I'll go to resorts

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to the gold and the gold to our Express application you'll see those files here as well.

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And if I'll have a look at the package the Jason the file you'll see this set off.

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Actually values assigned to some keys like name whereas some description and so on.

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Great.

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Now we are ready to try again.

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Installation of back just using npm install command but important outcome from this command is that

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the node just container has actually created files package and the Jason the file and this one inside

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of our local folder on our computer.

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And now those files actually belong to our application and you are able to run this application using

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any ours or not just container.

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All right let's not go to terminal and let's run and being install a command.

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But actually we need to run in being this document along with name of the package we want to install

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into our project and name of the package use Express.

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Here it is.

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Let's go to terminal end here.

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Let's clear it quickly and let's run command npm install express like so here was and type comment that

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will be executed off the start of this container.

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And please note that each time when we run such command we actually start brand new container let's

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both Antigua and now you see that the summer job is undergoing right now and you'll see now that express

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package was installed into our project.

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And now if I would go to visual studio called you should see here.

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Let's refresh.

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You should see here.

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Note modules folder inside of the Express folder and inside of that folder you'll see by each of our

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folders that contain actually additional packages that were installed along with Express package.

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That's because express package itself has by each of its own dependencies.

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And here you see that in total fifty packages from 37 contributors were added.

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Great.

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That's how we were able finally install express package into our not just application.

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And notice that for that we have used no GSK container and we have executed some NPM commands inside

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of that container.

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It is very very important.

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We have not used node or NPM locally on our computer because the simply absent the moment great let's

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not wait to start our application once again using Node in the GSK comment.

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Let's clear terminal and go back to this command and instead of NPM install express let's type node

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index.

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Here was our intelligence file.

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Here it is.

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And we want to execute it using Node less porous Antrim and we see that we have connected actually to

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node Jesus brought us inside of the container and container now is up and run.

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Let's open up new tap and here let's verify that Docker appears and you'll see that this container is

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up and now we're actually able to verify whether we're able to connect to our Express Sara or not.

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And you may guess that we will be able to connect to the sport and I am sure that you know the answer.

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We cannot actually mapped external port to this internal port three thousand but let's anyway try it

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to open up web browser and here let's type local Horst column three thousand like so.

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And of course I see this error.

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This site can be reached let's not modify our command here and let's at also port.

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Let's go to the step.

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Let's terminate our application and you'll see that actually this doesn't work with this process because

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we're connected directly to node G.S. process that at the moment doesn't actually handle seek in signal.

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Let's go to the step and let's stop this container manually using Docker stop.

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Command and let's type here.

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A seven for example.

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Actually we need to use a docker killed better because we will need to wait 10 seconds because again

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six term signal is also not recognised by Noel just brought us.

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And finally in 10 seconds this container will stop and defy will go by here you'll see that this process

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is over.

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Let's no at also port Megan.

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And here for that let's use option that beam and let's say that we want to simply run this.

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No just express application using same boat as was opened by express application itself it is three

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thousand.

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Let's go here and type three thousand as external port and optical Let's type through a thousand as

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internal port as well let's not press enter and see whether we will be able to connect to our expressway

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etcetera.

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Now let's go to Google Chrome and here let's refresh page.

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And now I see my message.

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This Express up was executed by no gas container inside of the door.

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And that means that now our report made big rocks and now our tiny express application works as well.

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And again for that we are required to enter some NPM commands in order to install express package inside

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of our Express application.

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And if l go to package the Jason File you'll see additional dependency that was added here.

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This file and this express package.

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Great.

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Now let me demonstrate to how we're able to handle control seem inside of the node GSR application and

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let's adjust our application a bit.

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But let's do it after the small bowls.

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See you next.

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Bye bye.