lucacasonato / deno-docker

Latest dockerfiles and images for deno - alpine, centos, debian, ubuntu

Deno Docker

Docker files for deno published on Dockerhub:

• Alpine Linux: hayd/alpine-deno (~28Mb)
• Centos: hayd/centos-deno (~94Mb)
• Debian: hayd/debian-deno (~47Mb)
• Ubuntu: hayd/ubuntu-deno (~50Mb)

The amazonlinux1 build is used to run deno on AWS Lambda.

---

Run locally

To start the deno repl:

$ docker run -it --init hayd/alpine-deno:1.2.1 repl

To shell into the docker runtime:

$ docker run -it --init --entrypoint sh hayd/alpine-deno:1.2.1

To run main.ts from your working directory:

$ docker run -it --init -p 1993:1993 -v $PWD:/app hayd/alpine-deno:1.2.1 --allow-net /app/main.ts

Here, -p 1993:1993 maps port 1993 on the container to 1993 on the host, -v $PWD:/app mounts the host working directory to /app on the container, and --allow-net /app/main.ts is passed to deno on the container.

As a Dockerfile

FROM hayd/alpine-deno:1.2.1

EXPOSE 1993  # The port that your application listens to.

WORKDIR /app

# Prefer not to run as root.
USER deno

# Cache the dependencies as a layer (the following two steps are re-run only when deps.ts is modified).
# Ideally cache deps.ts will download and compile _all_ external files used in main.ts.
COPY deps.ts .
RUN deno cache deps.ts

# These steps will be re-run upon each file change in your working directory:
ADD . .
# Compile the main app so that it doesn't need to be compiled each startup/entry.
RUN deno cache main.ts

CMD ["run", "--allow-net", "main.ts"]

and build and run this locally:

$ docker build -t app . && docker run -it --init -p 1993:1993 app

(optional) Add deno alias to your shell

Alternatively, you can add deno command to your shell init file (e.g. .bashrc):

deno () {
  docker run \
    --interactive \
    --tty \
    --rm \
    --volume $PWD:/app \
    --volume $HOME/.deno:/deno-dir \
    --workdir /app \
    hayd/alpine-deno:1.2.1 \
    "$@"
}

and in your terminal

$ source ~/.bashrc
$ deno --version
$ deno run ./main.ts

---

See example directory.

Note: Dockerfiles provide a USER deno and DENO_DIR is set to /deno-dir/ (which can be overridden).

If running multiple deno instances within the same image you can mount this directory as a shared volume.