Rename server -> restserver in nix setup

While I'd like to rename it the other way around, it would be a much
more breaking change. So for now, this way.

nix/docker.nix

@@ -9,7 +9,7 @@
   tesseract4,
   python3Packages,
   unoconv,
-  docspell-server,
+  docspell-restserver,
   docspell-joex,
 }: let
   mkImage = {
@@ -64,10 +64,10 @@
       tag = "v${pkg.version}";
     };
 in {
-  docspell-server = mkImage {
+  docspell-restserver = mkImage {
     name = "docspell-restserver";
     port = 7880;
-    pkg = docspell-server;
+    pkg = docspell-restserver;
     tools = [];
   };
   docspell-joex = mkImage {

nix/modules/server.nix

@@ -12,7 +12,7 @@ with lib; let
     if cfg.runAs == null
     then "docspell"
     else cfg.runAs;
-  configFile = pkgs.writeText "docspell-server.conf" ''
+  configFile = pkgs.writeText "docspell-restserver.conf" ''
     {"docspell": {"server":
       ${builtins.toJSON (lib.recursiveUpdate declared_config cfg.extraConfig)}
     }}
@@ -878,7 +878,7 @@ in {
 
     systemd.services.docspell-restserver = let
       args = builtins.concatStringsSep " " cfg.jvmArgs;
-      cmd = "${pkgs.docspell-server}/bin/docspell-restserver ${args} -- ${configFile}";
+      cmd = "${pkgs.docspell-restserver}/bin/docspell-restserver ${args} -- ${configFile}";
     in {
       description = "Docspell Rest Server";
       after = ["networking.target"];

nix/pkg.nix

@@ -14,9 +14,9 @@
     sha256 = "sha256-flKWjEsMd2/XT3Bu6EjFgf3lCojvLbKFDEXemP1K+/8=";
   };
 in {
-  docspell-server = stdenv.mkDerivation {
+  docspell-restserver = stdenv.mkDerivation {
     inherit version;
-    pname = "docspell-server";
+    pname = "docspell-restserver";
 
     src = fetchzip server;
     buildInputs = [jdk17];
@@ -30,6 +30,7 @@ in {
       $out/docspell-restserver-${version}/bin/docspell-restserver -java-home ${jdk17} "\$@"
       EOF
       chmod 755 $out/bin/docspell-restserver
+
     '';
   };