├── Dockerfile
├── nginx.conf
└── supergrok.sh


/Dockerfile:
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 1 | FROM alpine
 2 | RUN apk add --no-cache curl nginx
 3 | RUN curl https://bin.equinox.io/c/4VmDzA7iaHb/ngrok-stable-linux-amd64.zip >/tmp/ngrok.zip && \
 4 |     unzip -d /usr/local/bin /tmp/ngrok.zip && \
 5 |     rm -f /tmp/ngrok.zip
 6 | RUN curl -L https://github.com/stedolan/jq/releases/download/jq-1.5/jq-linux64 >/usr/local/bin/jq && \
 7 |     chmod +x /usr/local/bin/jq
 8 | COPY nginx.conf /etc/nginx/nginx.conf
 9 | COPY supergrok.sh /bin/supergrok.sh
10 | CMD ["supergrok.sh"]
11 | 


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/nginx.conf:
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 1 | worker_processes 1;
 2 | 
 3 | pid /run/nginx.pid;
 4 | 
 5 | error_log /error.log;
 6 | 
 7 | events {
 8 |   worker_connections 1024;
 9 | }
10 | 
11 | http {
12 |   keepalive_timeout  65;
13 |   server {
14 |     access_log /access.log;
15 |     listen       80;
16 |     server_name  localhost;
17 |     location ~ /(?<containeraddrport>[0-9.:]+)(?<containeruri>.*) {
18 |       rewrite /[0-9.:]+/.* $containeruri break;
19 |       rewrite /[0-9.:]+ / break;
20 |       proxy_pass http://$containeraddrport;
21 |       proxy_redirect / /$containeraddrport/;
22 |     }
23 |     #location / {
24 |     #  proxy_pass http://pwd;
25 |     #}
26 |   }
27 | }
28 | 
29 | 


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/supergrok.sh:
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 1 | #!/bin/sh
 2 | echo "Starting NGINX."
 3 | nginx
 4 | echo "Starting ngrok."
 5 | ngrok http 80 --log /ngrok.log >/dev/null &
 6 | echo "Waiting for tunnel URL..."
 7 | while true; do
 8 |   URL=$(curl -s localhost:4040/api/tunnels | jq -r .tunnels[0].public_url)
 9 |   [ "$URL" == "null" ] && continue
10 |   [ "$URL" ] && break
11 |   sleep 1
12 | done
13 | cat <<EOF
14 | 
15 | Your supergrok tunnelizer is available at: $URL
16 | 
17 | If you go to that URL, you should see the default "Welcome to NGINX!" page.
18 | To connect to one of your Docker nodes, add the IP address of that node (and
19 | an optional port number) after that URL. For instance, to reach the service
20 | running on node 10.0.3.5 and exposed on port 8000, just go to the following
21 | address: http://xxxx.ngrok.io/10.0.3.5:8000 
22 | 
23 | Here is the URL in a machine-catchable format (so you can grep ^URL= these
24 | messages, if you are so inclined):
25 | 
26 | URL=$URL
27 | 
28 | Note that NGINX will not rewrite absolute links contained in your pages. In
29 | other words, if you serve a web page containing a link to "/hello", it will
30 | translate to http://xxxx.ngrok.io/hello, which will not work. The correct
31 | link would be http://xxxx.ngrok.io/10.0.3.5:8000/hello! However, NGINX will
32 | rewrite "Location:" headers, so simple HTTP redirections should work. If it
33 | is a problem for you, you can run a dedicated ngrok tunnel for your service
34 | with the following command (assuming you want to expose the service running
35 | on node 10.0.3.5 and exposed on port 8000):
36 | docker run --net host -ti jpetazzo/ngrok http 10.0.3.5:8000
37 | 
38 | Have fun!
39 | EOF
40 | wait
41 | 


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