Move nginx configuration to a networked-docker-container

etc/nixos/configuration.nix

@@ -7,6 +7,11 @@
     <nixpkgs/nixos/modules/profiles/headless.nix>
 
     ./modules/networked-docker-containers.nix
+
+    # FIXME: It'd be much nicer if these were imported further down,
+    # and set inside the docker-containers set, instead of setting the
+    # docker-containers set here.
+    ./services/nginx.nix
   ];
 
   networking = {
@@ -59,25 +64,6 @@
   };
 
   docker-containers = {
-    ## Reverse proxy
-    #
-    # These two services set up a reverse proxy that allows setting up
-    # SSL services with docker containers on subdomains easily.
-    #
-    # To use, simply set:
-    #
-    # ```nix
-    # environment = {
-    #     VIRTUAL_HOST = "<subdomain>.tlater.net";
-    #     LETSENCRYPT_HOST = "<subdomain>.tlater.net";
-    # }
-    # extraDockerOptions = [
-    #     "--network=webproxy"
-    # ];
-    # ```
-    nginx-proxy = import ./services/nginx-proxy.nix;
-    nginx-proxy-letsencrypt = import ./services/nginx-proxy-letsencrypt.nix;
-
     ## Actual service definitions
     gitlab = import ./services/gitlab.nix;