Skip to main content

Packaging a Static Website with Dockerfile and pushing to DockerHub

 Want to read this with better formatting? Of course you do; Check out the page on Notion!

 

What's in the image?

A simple static webpage I had created for fun a few months ago. I knew it would come in handy!

What did I do?

  • Used demo static webpage for testing.
  • Created Dockerfile

💡 It should be Dockerfile, no extension. Dockerfile.Dockerfile is incorrect!

  • Used nginx Alpine as server and the following code:

 FROM scratch as static-site 

WORKDIR /app 

COPY . . [#to same directory]

FROM nginx:1.16.0-alpine as server

 COPY --from=static-site /app /usr/share/nginx/html 

EXPOSE 80 [#For web access]

CMD [ "nginx", "-g", "daemon off;"]

 From Mwiza Kumwenda (see resources below).

 

CMD [ "nginx", "-g", "daemon off;"]
 
 

 

I wondered if I should use "start" in the CMD [ "nginx", "-g", "daemon off;"] list/tuple, but it worked to package the image without it

 Actually, pushing the image required me to start it as a container and then package the container, otherwise, you're met with the following error messages;

Error Pushing to Docker Hub:

An image does not exist locally with the tag username/staticapptest an 'denied: requested access to the resource is denied', 'failed to read dockerfile:
open /var/lib/docker/tmp/buildkit-mount267173172/Dockerfile: no such file or directory'

It seems odd to me, but I'm not a Docker Developer, I'm sure they have a good reason for this!

The Fix

  • Creating the image as a container and then pushing it works

Steps Taken:

  1. Package app (above)
  2. Run the Image
  3. Take the Image ID and run within a container;
776442dod12   libtest:latest   "nginx -g 'daemon of…"   18 seconds ago   Up 13 seconds   0.0.0.0:80->80/tcp   hopeful_thompson
  1. Commit the container;
docker commit 776442dod12   <name>/libtest:<tag>
  1. 5 docker images reveals;
libtest            latest    776442dod12   25 hours ago     29.4MB
  1. Then I push it to my DockerHub;

 And it works; Check it out publicly here.

Make Sure...

  • You're in the right directory with the file. 
  • The file is simple Dockerfile, not Dockerfile.Dockerfile. 
  • The image is run in a container before you package.

 

Resources used:

 

Comments

Popular posts from this blog

Connecting IoT Devices to a Registration Server (Packet Tracer, Cisco)

In Packet Tracer, a demo software made by Cisco Systems. It certainly has changed a lot since 2016. It's almost an Olympic feat to even get started with it now, but it does look snazzy. This is for the new CCNA, that integrates, among other things, IoT and Automation, which I've worked on here before. Instructions here . I don't know if this is an aspect of "Let's make sure people are paying attention and not simply following blindly", or an oversight - The instructions indicate a Meraki Server, when a regular one is the working option here. I have to enable the IoT service on this server. Also, we assign the server an IPv4 address from a DHCP pool instead of giving it a static one. For something that handles our IoT business, perhaps that's safer; Getting a new IPv4 address every week or so is a minimal step against an intruder, but it is a step. There are no devices associated with this new server; In an earlier lab (not shown), I attached them to 'H

What Do You Need? [AKA; List of Offered Services / My Next Role] (2020)

UPDATED 2021 I am a trusted outsourced remote consultant for your company.   I enjoy having the flexibility to take on temporary projects from time to time! I start at part-time, temp work for now. If we like each other, we can renegotiate. If anything sounds weird, out there, or unusual - Feel free to e-mail me , because I probably think it's awesome. 3 Services Offered Technical: Cloud Technician     Azure [ See tag ] Subcategories: Infrastructure As Code (Specifically Terraform/Azure and CloudFormation/AWS ) Azure Networking I really like the Azure space, and will continue down that path.  Support [Web: Example Job Description ] [Text : Example Description ]     I help you with adjustments in HTML, CSS, and Javascript.     When you email a business a question and they answer? That's me.   Auditing :  Something doesn't work on your page or in your app. I can find it. [ Here ] [ Example Job Description ]   I really enjoy testing apps and webpage concepts! I have an

Contactless Tech’s Role in the New Guest Experience ft. INTELITY and The George

 Contactless hospitality technology is growing. You want to get away, and you'll be damned if a little thing like a deadly virus will stop you! But you still don't want to touch things. Ew. During the chat between INTELITY CEO Robert Stevenson and THE GEORGE Director of Operations Kerrie Hunter, you’ll learn how the historic boutique hotel has adapted a mobile-first guest experience in the wake of COVID-19—and how they see contactless technology affecting the future of hospitality. I don't remember how I found INTELITY (probably hoping to score a position with them), but I liked them enough to stay on the e-mail lists.