deno-deploy

name	deno-deploy
description	Build and deploy Deno applications — version detection, dependency caching, and Dockerfile patterns. Use when deploying a Deno project, or when deno.json or deno.jsonc is detected.
metadata	{"version":"1.0"}

Deno Deployment

Detection

Project is Deno if deno.json or deno.jsonc exists in the root.

Versions

1. .deno-version file or mise.toml / .tool-versions
2. Defaults to 2

Build

Build Process

1. Install Deno
2. Cache dependencies: deno cache
3. Start command derived from project config

Start Command

1. main.ts, main.js, main.mjs, or main.mts in project root
2. If none found, use first .ts, .js, .mjs, or .mts file
3. Run with: deno run --allow-all <entry>

deno.json / deno.jsonc may specify tasks or main; prefer those when present.

Install Stage Optimization

Copy in order:

• deno.json, deno.jsonc
• lock.json (if present)
• *.ts, *.js, *.mjs, *.mts (or full source)

Dockerfile Patterns

Basic Deno App

FROM denoland/deno:2
WORKDIR /app
COPY deno.json deno.jsonc ./
COPY . .
RUN deno cache main.ts
EXPOSE 3000
CMD ["deno", "run", "--allow-all", "main.ts"]

With lock file

FROM denoland/deno:2
WORKDIR /app
COPY deno.json deno.jsonc lock.json ./
COPY src/ ./src/
RUN deno cache src/main.ts
COPY . .
EXPOSE 3000
CMD ["deno", "run", "--allow-all", "src/main.ts"]

deno.json tasks

FROM denoland/deno:2
WORKDIR /app
COPY deno.json deno.jsonc ./
COPY . .
RUN deno cache main.ts
EXPOSE 3000
CMD ["deno", "task", "start"]