1. My Caddy version (caddy version):
Docker image caddy/caddy:alpine (2.0.0-beta.17)
2. How I run Caddy:
Docker Compose
a. System environment:
Ubuntu 18.04
Docker 19.03.8
docker-compose version 1.25.4
b. Command:
The image default command.
c. Service/unit/compose file:
version: "3.7"
services:
caddy:
container_name: caddy
image: caddy/caddy:alpine
restart: always
volumes:
- ./Caddyfile:/etc/caddy/Caddyfile
- ./config:/config
- ./data:/data
ports:
- "80:80"
- "443:443"
environment:
- GHOST
- ISSO
- SHAARLI
networks:
default:
external:
name: $DEFAULT_NETWORK
with .env file being:
GHOST=itsallsotireso.me
ISSO=marginalia.itsallsotireso.me
SHAARLI=normco.re
DEFAULT_NETWORK=firefly
d. My complete Caddyfile or JSON config:
{
http_port 80
https_port 443
experimental_http3
debug
}
(secureheaders) {
header {
Strict-Transport-Security "max-age=31536000; includesubdomains; preload"
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
Referrer-Policy strict-origin-when-cross-origin
X-Xss-Protection "1; mode=block"
Feature-Policy "accelerometer 'none'; ambient-light-sensor 'none'; autoplay 'none'; camera 'none'; encrypted-media 'none'; fullscreen 'self'$
Expect-CT "max-age=604800"
}
}
(robots) {
header {
X-Robots-Tag "noindex, nofollow, noarchive, nosnippet, notranslate, noimageindex"
}
}
(proxy) {
header_up X-Forwarded-Proto {scheme}
header_up X-Forwarded-For {remote}
header_up X-Real-IP {remote}
header_down X-Powered-By "the Holy Spirit"
header_down Server "CERN httpd"
}
(compression) {
encode zstd gzip
}
www.{$GHOST}, www.{$SHAARLI} {
redir * https://{http.request.host.labels.1}.{http.request.host.labels.0}{path} permanent
}
{$GHOST} {
import secureheaders
import robots
reverse_proxy ghost:2368 {
import proxy
}
# import compression
}
{$ISSO} {
import secureheaders
import robots
reverse_proxy isso:8080 {
header_down X-Powered-By "the Holy Spirit"
header_down Server "CERN httpd"
import proxy
}
}
{$SHAARLI} {
import secureheaders
import robots
reverse_proxy shaarli:80 {
import proxy
}
import compression
}
3. The problem I’m having:
After reading the documentation, I just want to learn and practice the Caddy API.
Using Caddy in Docker, I do not manage to execute the API commands.
For example:
docker exec caddy caddy run
I get:
run: loading initial config: loading new config: starting caddy administration endpoint: listen tcp 127.0.0.1:2019: bind: address already in use
or:
curl localhost:2019/config/
I get:
curl: (7) Failed to connect to localhost port 2019: Connection refused
4. Error messages and/or full log output:
see above
5. What I already tried:
In my docker-compose.yml, I tried to bind the port 2019:
ports:
- "80:80"
- "443:443"
- "2019:2019"
Then:
curl localhost:2019/config/
I get:
curl: (56) Recv failure: Connection reset by peer
I also tried to change the Admin endpoint in my Caddyfile global options:
{
http_port 80
https_port 443
experimental_http3
debug
admin localhost:2019
}
then:
curl: (7) Failed to connect to localhost port 2019: Connection refused
I tried a different endpoint (2121), all the same
caddy | 2020/03/18 19:30:35.221 INFO admin admin endpoint started caddy | 2020/03/18 19:30:35.221 INFO admin admin endpoint started {"address": "localhost:2121", "enforce_origin": false, "origins": ["localhost:2121"]}
curl: (7) Failed to connect to localhost port 2121: Connection refused
I tried other things like caddy:2019, or the Docker internal IP, but nothing works.
It is weird because I use other commands with docker exec caddy caddy like fmt, validate or reload, and all work fine.
Any idea how I could use the API to work with the JSON? I would really love to learn and practice, thank you for the help.
Oh, and netstat -plnt | grep ':2019' returns nothing.
6. Links to relevant resources:
Not much, I googled the best I could and I found nothing helpful.
