Varnish 4 image that updates automatically when its config is changed.
Volume a directory containing your custom config.vcl into /varnish - e.g.
docker run --detach --volume ${PWD}:/varnish --publish 80:80 caseyfw/autovarnish
Now any changes made to config.vcl will result in a vcl.load and vcl.use in
the container.
If you're having problems, you may find the log output useful - it will output unsuccessful VCL compilations if they occur.
docker logs -f autovarnish
The following config.vcl would result in requests for /my-app-path being
directed to 172.17.0.1:8000.
backend my_app {
.host = "172.17.0.1";
.port = "8000";
.connect_timeout = 1s;
.first_byte_timeout = 30s;
.between_bytes_timeout = 10s;
.max_connections = 10;
}
sub vcl_recv {
if (req.url ~ "^/my-app-path") {
set req.backend_hint = my_app;
}
}
The default backend is unset. However, a pseudo default backend called 'first' is defined as 172.17.0.1:8080. Being the first backend defined in config, this is the default backend unless you create one explicitly named 'default'.