WEBVTT

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-: In the last section, we built out our Docker image

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using the development Docker file that we just put together.

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When we built that image,

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you might have noticed that we got a little line here

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that we did not see previously.

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It says "sending build context to Docker daemon,"

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and then it printed out 155 megabytes.

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So why are we seeing that here now

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when we definitely did not see it previously?

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Well, here's the issue.

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When we just installed the Create React App tool

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and used it to generate a new project,

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that tool automatically installed all of our dependencies

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into our project directory.

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So our node modules folder right here

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has a ton of different dependencies inside of it,

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155 megabytes worth.

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Now, in the past, we did not install

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any of our dependencies into our working folder.

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Instead, we have relied upon our Docker image

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to install those dependencies

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when the image was initially created.

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So at present, we essentially have

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two copies of dependencies, and we really do not need two.

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The easiest solution here is to delete

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the node modules folder inside of our working directory

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which I'm gonna do right now.

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So I'll delete that entire folder by moving it to trash.

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If I now go and try to build my image a second time

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using Docker build

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and then force any Docker file.dev file to be used,

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you'll notice that it goes much faster,

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much faster like it was previously

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when we were putting together our node server using Docker.

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All right, so that's a good little fix.

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Let's take another quick pause

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and then try starting up a container out of this image

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in the next section.