Deploying container images in GCP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the container image URL in the deployment command.

GCP

gcloud run deploy my-service --image=[1] --region us-central1

Drag options to blanks, or click blank then click option'

Agcloud container images list

Bmy-image

Cdocker run my-image

Dgcr.io/my-project/my-image:latest

Attempts:

3 left

💡 Hint

Common Mistakes

Using only the image name without the registry URL.

Including docker commands instead of image URL.

Listing images instead of specifying one.

The --image flag requires the full container image URL including the registry, project, image name, and tag.

2fill in blank

medium

Complete the command to build a container image using Cloud Build.

GCP

gcloud builds submit --tag [1] .

Drag options to blanks, or click blank then click option'

Agcr.io/my-project/my-image:latest

Bmy-image

Cdocker build

Dgcloud run deploy

Attempts:

3 left

💡 Hint

Common Mistakes

Using only the image name without registry.

Using unrelated commands like docker build or gcloud run deploy.

The --tag flag needs the full image URL with registry and tag to push the built image correctly.

3fill in blank

hard

Fix the error in the deployment command by completing the missing flag.

GCP

gcloud run deploy my-service [1] gcr.io/my-project/my-image:latest --region us-central1

Drag options to blanks, or click blank then click option'

A--image

B--service-account

C--platform

D--project

Attempts:

3 left

💡 Hint

Common Mistakes

Using --project instead of --image.

Omitting the flag entirely.

Using unrelated flags like --platform or --service-account.

The deployment command requires the --image flag to specify which container image to deploy.

4fill in blank

hard

Fill both blanks to create a Dockerfile that sets the base image and exposes port 8080.

GCP

FROM [1]
EXPOSE [2]

Drag options to blanks, or click blank then click option'

Apython:3.12-slim

B80

C8080

Dnode:18-alpine

Attempts:

3 left

💡 Hint

Common Mistakes

Exposing port 80 instead of 8080.

Using a Node.js base image for a Python app.

Omitting the EXPOSE instruction.

The FROM line sets the base image, here a lightweight Python image. The EXPOSE line tells Docker which port the container listens on, commonly 8080 for web apps.

5fill in blank

hard

Fill all three blanks to define a Cloud Run service deployment with memory limit, concurrency, and environment variable.

GCP

gcloud run deploy my-service --image gcr.io/my-project/my-image:latest --memory=[1] --concurrency=[2] --set-env-vars=[3]

Drag options to blanks, or click blank then click option'

A512Mi

B80

CENV=production

D1Gi

Attempts:

3 left

💡 Hint

Common Mistakes

Using memory units incorrectly.

Setting concurrency too high or too low without reason.

Incorrect format for environment variables.

The --memory flag sets the container memory limit, --concurrency controls how many requests a container handles at once, and --set-env-vars sets environment variables for the service.

Practice

1. What is the main purpose of deploying a container image on Google Cloud Run?

easy

A. To run applications without managing servers

B. To create virtual machines manually

C. To store data in a database

D. To write code directly in the cloud console

Solution

1. Step 1: Understand what Cloud Run does

   Cloud Run runs containerized apps without needing you to manage servers.

2. Step 2: Compare options to Cloud Run's purpose

   Options B, C, and D describe other cloud tasks, not Cloud Run's main use.

3. Final Answer:

   To run applications without managing servers -> Option A

4. Quick Check:

   Cloud Run = serverless app running [OK]

Hint: Cloud Run runs apps without servers [OK]

Common Mistakes:

• Confusing Cloud Run with VM creation
• Thinking Cloud Run stores data
• Assuming Cloud Run is a coding environment

2. Which command correctly deploys a container image to Cloud Run in the us-central1 region?

easy

A. gcloud deploy run myapp --image=gcr.io/myproject/myimage --zone=us-central1

B. gcloud run deploy myapp --image=gcr.io/myproject/myimage --region=us-central1

C. gcloud run create myapp --image=gcr.io/myproject/myimage --zone=us-central1

D. gcloud run deploy --image=myimage gcr.io/myproject --region=us-central1

Solution

1. Step 1: Identify correct gcloud command syntax

   The correct command is 'gcloud run deploy' followed by service name, image, and region.

2. Step 2: Check each option for syntax errors

   gcloud run deploy myapp --image=gcr.io/myproject/myimage --region=us-central1 matches correct syntax. Options B, C, and D have wrong commands or argument order.

3. Final Answer:

   gcloud run deploy myapp --image=gcr.io/myproject/myimage --region=us-central1 -> Option B

4. Quick Check:

   Correct deploy syntax = gcloud run deploy myapp --image=gcr.io/myproject/myimage --region=us-central1 [OK]

Hint: Use 'gcloud run deploy' with --image and --region [OK]

Common Mistakes:

• Using 'gcloud deploy run' instead of 'gcloud run deploy'
• Confusing --zone with --region
• Incorrect argument order

3. Given this command:
gcloud run deploy myservice --image=gcr.io/myproj/app:v1 --region=us-east1
What happens after running it?

medium

A. The container image is deployed as a Cloud Run service named 'myservice' in us-east1 region

B. A virtual machine named 'myservice' is created in us-east1

C. The image is uploaded to Google Container Registry only

D. The command fails because region must be us-central1

Solution

1. Step 1: Understand the deploy command effect

   The command deploys the container image as a Cloud Run service with the given name and region.

2. Step 2: Evaluate other options

   B is wrong because no VM is created. C is wrong because deployment runs the image, not just upload. A is wrong because us-east1 is a valid region.

3. Final Answer:

   The container image is deployed as a Cloud Run service named 'myservice' in us-east1 region -> Option A

4. Quick Check:

   Deploy command = service deployment [OK]

Hint: Deploy runs container as service, not VM or just upload [OK]

Common Mistakes:

• Thinking deploy creates VM
• Confusing upload with deploy
• Assuming region must be us-central1

4. You run:
gcloud run deploy --image=gcr.io/myproj/app:v2 --region=us-west1
But get an error: "Service name is required." What is the fix?

medium

A. Remove the --region flag

B. Change --image to --container-image

C. Add the service name after 'deploy', e.g., 'gcloud run deploy myservice ...'

D. Run the command without 'gcloud run'

Solution

1. Step 1: Identify missing required argument

   The error says service name is missing; the deploy command needs a service name after 'deploy'.

2. Step 2: Fix the command by adding service name

   Add the service name, e.g., 'myservice', after 'deploy' to fix the error.

3. Final Answer:

   Add the service name after 'deploy', e.g., 'gcloud run deploy myservice ...' -> Option C

4. Quick Check:

   Deploy needs service name [OK]

Hint: Always specify service name after 'deploy' [OK]

Common Mistakes:

• Omitting service name
• Changing unrelated flags
• Removing required command parts

5. You want to deploy a new version of your app container image to Cloud Run and keep the same service URL. Which command should you use?

hard

A. gcloud container deploy myapp --image=gcr.io/myproj/app:v2

B. gcloud run create myapp --image=gcr.io/myproj/app:v2 --region=us-central1

C. gcloud run deploy --image=gcr.io/myproj/app:v2 --region=us-central1

D. gcloud run deploy myapp --image=gcr.io/myproj/app:v2 --region=us-central1

Solution

1. Step 1: Understand updating a Cloud Run service

   To update an existing service and keep its URL, use 'gcloud run deploy' with the same service name.

2. Step 2: Check options for correct update command

   gcloud run deploy myapp --image=gcr.io/myproj/app:v2 --region=us-central1 uses 'deploy' with service name and new image, which updates the service. Options A, B, and D are incorrect commands or missing service name.

3. Final Answer:

   gcloud run deploy myapp --image=gcr.io/myproj/app:v2 --region=us-central1 -> Option D

4. Quick Check:

   Deploy with same service name updates app [OK]

Hint: Use 'deploy' with same service name to update [OK]

Common Mistakes:

• Using 'create' instead of 'deploy' to update
• Omitting service name
• Using wrong gcloud commands