Caddy works with Google Cloud Run

balloon · January 26, 2020, 1:52am

Caddy is great, but server setup is painful.
So, let’s use Google Cloud Run. You can use Caddy in minutes.
With Always Free, you can try it with little concern for billing.

Precondition

Contracted Google Cloud Platform and completed Google Cloud Run official documentation “Quickstart: Build and Deploy”:

Caddy + PHP

This replaces php:apache.
Put the files to be installed in root together with Dockerfile.

gist.github.com

https://gist.github.com/fu-sen/3126d995657b2db861d62e593bdf6ac5

Dockerfile

FROM abiosoft/caddy:php
COPY ./ /srv/
RUN sed -i 's/0\.0\.0\.0/0.0.0.0:{$PORT}/' /etc/Caddyfile
RUN sed -e '$a tls off' /etc/Caddyfile

index.php

<?php
$target = getenv('TARGET', true) ?: 'Caddy';
echo sprintf("Hello %s!", $target);

Build: (or docker)

gcloud builds submit --tag gcr.io/PROJECT-ID/caddy

Deploy: (or GCP console)

gcloud run deploy --image gcr.io/PROJECT-ID/caddy --platform managed

Browse:
スクリーンショット 2020-01-26 10.09.52

Note: See 502 Bad Gateway immediately after deployment. At that time php-fpm is still booting.

Freely editable Caddyfile

Display today’s date using a template.

gist.github.com

https://gist.github.com/fu-sen/a3a9b521fd74274e7f8d18e9b3fab41c

Caddyfile

0.0.0.0:{$PORT}

tls off

# Do not rewrite up to this point!

browse
log stdout
errors stdout
templates

Dockerfile

FROM abiosoft/caddy
copy ./Caddyfile /etc/
COPY ./ /srv/

index.html

{{.Now "Monday, 2 Jan 2006"}}

gcloud builds submit --tag gcr.io/PROJECT-ID/caddy
gcloud run deploy --image gcr.io/PROJECT-ID/caddy --platform managed

スクリーンショット 2020-01-26 10.45.28

Note:

This Caddy is v1. v1 and v2 have a difference in the syntax of Caddyfile.
Do not change after Caddyfile: 0.0.0.0:{$PORT} and tls off
This (IP address:port and custom domain) is realized on Cloud Run side.

Enjoy!

balloon · January 28, 2020, 3:36am

If you fail to build, try:

gcloud builds submit --project PROJECT-ID --tag gcr.io/PROJECT-ID/caddy

balloon · January 28, 2020, 3:44am

I also tried the official Docker image for Caddy v2.

For now, editing Caddyfile required root privileges.

gcloud builds submit --project PROJECT-ID --tag gcr.io/PROJECT-ID/caddy2
gcloud run deploy --image gcr.io/PROJECT-ID/caddy2 --platform managed

Free Caddyfile:

matt · February 3, 2020, 6:05am

Thanks for the guide! This is really interesting. Maybe we should provide some sort of official image or container or something for GCR?