Added custom HSTS support (issue #953)

test/test_ssl/test_hsts.yml

@@ -0,0 +1,32 @@
+web1:
+  image: web
+  expose:
+    - "81"
+  environment:
+    WEB_PORTS: "81"
+    VIRTUAL_HOST: "web1.nginx-proxy.tld"
+
+web2:
+  image: web
+  expose:
+    - "81"
+  environment:
+    WEB_PORTS: "81"
+    VIRTUAL_HOST: "web2.nginx-proxy.tld"
+    HSTS: "off"
+
+web3:
+  image: web
+  expose:
+    - "81"
+  environment:
+    WEB_PORTS: "81"
+    VIRTUAL_HOST: "web3.nginx-proxy.tld"
+    HSTS: "max-age=86400; includeSubDomains; preload"
+
+sut:
+  image: jwilder/nginx-proxy:test
+  volumes:
+    - /var/run/docker.sock:/tmp/docker.sock:ro
+    - ../lib/ssl/dhparam.pem:/etc/nginx/dhparam/dhparam.pem:ro
+    - ./certs:/etc/nginx/certs:ro