feat: optimize Dockerfile to reduce image size and build time

[Saru2003]

Description

This PR optimizes the Docker build process for the AsyncAPI CLI. The current Docker image is large and takes a long time to build. These changes address both of those concerns:

Changes Made:

• Rewrote the Dockerfile using a multi-stage build to separate dependencies and runtime.
• Switched to ghcr.io/puppeteer/puppeteer:20.8.0 as the base image - it includes Chromium out of the box, which is required by some templates.
• Added a .dockerignore file to exclude unnecessary files like node_modules, .git, test, etc., reducing build context.
• Removed unused dev tools and temporary folders post-build to slim down the image.
• Used npm prune --omit=dev to eliminate devDependencies from the final image.
• Switched to a non-root user (myuser) for safer container execution.
• Created a symlink /usr/local/bin/asyncapi so the CLI can be invoked directly.

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Performance Comparison

Image Tag	Size (GB)	Build Time (s)	Size Reduction	Build Time Improvement
asyncapi-cli-unoptimized	5.53 GB	530 s	—	—
asyncapi-cli-revised	4.32 GB	245 s	↓ 1.21 GB (↓21.88%)	↓ 285 s (↓53.77%)

Build and runtime tested locally using a fork of the repository.

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How to Build & Run

docker build -t asyncapi-cli.

docker run -it --entrypoint sh asyncapi-cli

asyncapi --version

Related issue(s)
Resolves #1798

[changeset-bot]

🦋 Changeset detected

Latest commit: 2e155c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@asyncapi/cli	Minor

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[github-actions]

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'@asyncapi/cli': minor
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feat: optimize Dockerfile to reduce image size and build time

- 4b0017d: build: optimize Dockerfile and add .dockerignore to reduce image size

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[aeworxet]

The GitHub issue #1798 participates in the strictly serial AsyncAPI Bounty Program and is the responsibility of the assigned user.

You are welcome to choose another GitHub issue for contribution.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity 😴

It will be closed in 120 days if no further activity occurs. To unstale this pull request, add a comment with detailed explanation.

There can be many reasons why some specific pull request has no activity. The most probable cause is lack of time, not lack of interest. AsyncAPI Initiative is a Linux Foundation project not owned by a single for-profit company. It is a community-driven initiative ruled under open governance model.

Let us figure out together how to push this pull request forward. Connect with us through one of many communication channels we established here.

Thank you for your patience ❤️

[Shurtu-gal]

@Saru2003 as the issue has now been removed from bounty program could you please continue your work on this?