├── Dockerfile
├── default.vcl
└── start.sh


/Dockerfile:
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 1 | FROM        ubuntu:14.04.1
 2 | MAINTAINER  Ben Hall "Ben@BenHall.me.uk"
 3 | 
 4 | RUN apt-get update -qq && \
 5 |   apt-get upgrade -yqq && \
 6 |   apt-get -yqq install varnish && \
 7 |   apt-get -yqq clean
 8 | 
 9 | # Make our custom VCLs available on the container
10 | ADD default.vcl /etc/varnish/default.vcl
11 | 
12 | ENV VARNISH_PORT 80
13 | 
14 | # Expose port 80
15 | EXPOSE 80
16 | 
17 | ADD start.sh /start.sh
18 | CMD ["/start.sh"]


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/default.vcl:
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 1 | backend default {
 2 |   .host = "{VARNISH_BACKEND_HOST}";
 3 |   .port = "{VARNISH_BACKEND_PORT}";
 4 | }
 5 | 
 6 | sub vcl_recv {
 7 |   if (req.request == "PURGE") {
 8 |     return(lookup);
 9 |   }
10 |   if (req.url ~ "^/$") {
11 |     unset req.http.cookie;
12 |   }
13 | }
14 | 
15 | sub vcl_hit {
16 |   if (req.request == "PURGE") {
17 |     set obj.ttl = 0s;
18 |     error 200 "Purged.";
19 |   }
20 | }
21 | 
22 | sub vcl_miss {
23 |   #if purge request was not found, send 404 error
24 |   if (req.request == "PURGE") {
25 |     error 404 "Not in cache.";
26 |   }
27 |   #if request was not meant for the Wordpress admin interface, unset cookies
28 |   if (!(req.url ~ "wp-(login|admin)")) {
29 |     unset req.http.cookie;
30 |   }
31 |   #remove cookies from static resources
32 |   if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") {
33 |     unset req.http.cookie;
34 |     set req.url = regsub(req.url, "\?.$", "");
35 |   }
36 |   if (req.url ~ "^/$") {
37 |     unset req.http.cookie;
38 |   }
39 | }
40 | 
41 | sub vcl_fetch {
42 |   set beresp.ttl = 1w;
43 | 
44 |   if (req.url ~ "^/$") {
45 |     unset beresp.http.set-cookie;
46 |   }
47 | 
48 |   #bypass the proxy if the url contains the admin, login, preview or the xmlrpc
49 |   if (req.url ~ "wp-(login|admin)" || req.url ~ "preview=true" || req.url ~ "xmlrpc.php") {
50 |     return (hit_for_pass);
51 |   }
52 | 
53 |   if (!(req.url ~ "wp-(login|admin)")) {
54 |     unset beresp.http.set-cookie;
55 |   }
56 | }
57 | 
58 | 
59 | 


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/start.sh:
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 1 | #!/bin/bash
 2 | 
 3 | for name in VARNISH_BACKEND_PORT VARNISH_BACKEND_HOST VARNISH_BACKEND_DOMAIN
 4 | do
 5 |     eval value=\$$name
 6 |     sed -i "s|{${name}}|${value}|g" /etc/varnish/default.vcl
 7 | done
 8 | 
 9 | varnishd -f /etc/varnish/default.vcl -s malloc,100M -a 0.0.0.0:${VARNISH_PORT}
10 | varnishlog
11 | 


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