Docker-101: Tutorial - Node Application does not open on port 3000.

[rajBopche]

I was following the Docker 101 tutorial on the Docker Playground and reached Starting an App Container checkpoint in Our Application section.

As directed I hit the docker run -dp 3000:3000 docker-101 command and waited for 3000 badge to appear on PWD interface, but nothing happened the badge never appeared.

Instead, a very long ambiguous number appeared after the command on PWD in Docker Playground.

I even tried manually to access localhost, but all in vain.

MacBook Pro Specs:

1. MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
2. Processor 2.3Ghz Dual-Core Intel Core i5
3. Memory 8 GB 2133 Mhz LPDDR3

OS:

1. macOS Catalina
2. version: 10.15.3

Google Chrome:

1. version: 81.0.4044.138 (Official Build) (64-bit)

I was never able to access the Node To-Do List Application running on port 3000.

[eoiwes]

Same for me

[KaushikPathak90]

I was following the Docker 101 tutorial on the Docker Playground and reached Starting an App Container checkpoint in Our Application section.

As directed I hit the docker run -dp 3000:3000 docker-101 command and waited for 3000 badge to appear on PWD interface, but nothing happened the badge never appeared.

Instead, a very long ambiguous number appeared after the command on PWD in Docker Playground.

I even tried manually to access localhost, but all in vain.

MacBook Pro Specs:

1. MacBook Pro (13-inch, 2017, Two Thunderbolt 3 ports)
2. Processor 2.3Ghz Dual-Core Intel Core i5
3. Memory 8 GB 2133 Mhz LPDDR3

OS:

1. macOS Catalina
2. version: 10.15.3

Google Chrome:

1. version: 81.0.4044.138 (Official Build) (64-bit)

I was never able to access the Node To-Do List Application running on port 3000.

@rajBopche if you have used "Play with Docker" to follow the tutorial. It is not necessary to mention your hardware details.

"waited for 3000 badge to appear on PWD interface" -> Appeared. Clicked new tab opened but no list output(app).
Tried using diff browser Chrome and Firefox to check if Extensions were an issue but same result.

[KaushikPathak90]

Checked now..
Blank page opening with Title: Todo App

[42lan]

The problem persists. Running container in "attached" mode shows this output:

$ docker run -p 3000:3000 docker-101
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module '/app/src/index.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

[42lan]

Hi @SNikhill!

There is no more error.

Best regards.

[ofaurax]

The problem persists. Running container in "attached" mode shows this output:

$ docker run -p 3000:3000 docker-101
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module '/app/src/index.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

Same problem here and now

[alexkolo]

Solution. To do it correctly you need to first go in the folder "/app" and create there the dockerfile, build and run it. Then it works. if you do it from root it will fail.