Add docker-compose example

readme.md

@@ -66,6 +66,58 @@ docker run ldez/traefik-certs-dumper:<tag_name>
 
 **Note:** to dump data from Traefik v2, the CLI flag `--version v2` must be added.
 
+### `docker-compose`
+
+`docker-compose.yml`:
+
+```yaml
+version: '3'
+
+services:
+    traefik:
+        image: traefik:1.7
+        command:
+            --entryPoints='Name:http Address::80'
+            --entryPoints='Name:https Address::443 TLS'
+            --defaultentrypoints=http,https
+            --logLevel=DEBUG
+            --docker
+            --docker.exposedByDefault=false
+            --acme
+            --acme.acmeLogging=true
+            --acme.entrypoint=https
+            --acme.storage=/data/acme.json
+            --acme.onHostRule=true
+            --acme.httpChallenge.entryPoint=http
+        ports:
+            - 8001:80
+            - 8002:443
+        volumes:
+            - /var/run/docker.sock:/var/run/docker.sock
+            - .:/data
+
+    traefik-certs-dumper:
+        image: ldez/traefik-certs-dumper:v2.7.0
+        entrypoint: sh -c '
+            apk add jq
+            ; while ! [ -e /data/acme.json ]
+                || ! [ `jq ".Certificates | length" /data/acme.json` != 0 ]; do
+                    sleep 1
+                ; done
+            && traefik-certs-dumper file --watch 
+                --source /data/acme.json --dest /data/certs'
+        volumes:
+            - .:/data
+
+    whoami:
+        image: containous/whoami
+        labels:
+            traefik.enable: true
+            traefik.frontend.rule: Host:example.com
+```
+
+`traefik` ports are published to `8001` and `8002`. It's assumed here that you need certificates as separate files because you want to put `traefik` behind another proxy.
+
 ### Simple Dump
 
 ```console