FIxed files not being published

package.nix

@@ -5,31 +5,37 @@
 }: let
   src = ./.;
   buildScript = writeText "build-site.el" ''
-        ;; Load the publishing system
-        (require 'ox-publish)
-        ;; Define the publishing project
-        (setq org-publish-project-alist
-              (list
-               (list "kylekrein's website"
-                     :recursive t
-                     :base-directory "${src}"
-                     :publishing-directory "./public"
-                     :publishing-function 'org-html-publish-to-html
-    		 :with-author nil           ;; Don't include author name
-                 :with-creator t            ;; Include Emacs and Org versions in footer
-                 :with-toc nil                ;; Include a table of contents
-                 :section-numbers nil       ;; Don't include section numbers
-                 :time-stamp-file nil)))    ;; Don't include time stamp in file
+         ;; Load the publishing system
+         (require 'ox-publish)
+         ;; Define the publishing project
+         (setq org-publish-project-alist
+               (list
+                (list "kylekrein's website"
+                      :recursive t
+                      :base-directory "${src}"
+                      :publishing-directory "./public"
+                      :publishing-function 'org-html-publish-to-html
+     		 :with-author nil           ;; Don't include author name
+                  :with-creator t            ;; Include Emacs and Org versions in footer
+                  :with-toc nil                ;; Include a table of contents
+                  :section-numbers nil       ;; Don't include section numbers
+                  :time-stamp-file nil)
+    (list "attachments"
+    :recursive t
+          :base-directory "${src}"
+          :base-extension "jpg\\|gif\\|png\\|css"
+          :publishing-directory "./public"
+          :publishing-function 'org-publish-attachment)))    ;; Don't include time stamp in file
 
-    ;; Customize the HTML output
-    (setq org-html-validation-link nil            ;; Don't show validation link
-          org-html-head-include-scripts nil       ;; Use our own scripts
-          org-html-head-include-default-style nil ;; Use our own styles
-          org-html-head "<link rel=\"stylesheet\" href=\"https://cdn.simplecss.org/simple.min.css\" />")
+     ;; Customize the HTML output
+     (setq org-html-validation-link nil            ;; Don't show validation link
+           org-html-head-include-scripts nil       ;; Use our own scripts
+           org-html-head-include-default-style nil ;; Use our own styles
+           org-html-head "<link rel=\"stylesheet\" href=\"https://cdn.simplecss.org/simple.min.css\" />")
 
-        ;; Generate the site output
-        (org-publish-all t)
-        (message "Build complete!")
+         ;; Generate the site output
+         (org-publish-all t)
+         (message "Build complete!")
   '';
 in
   stdenvNoCC.mkDerivation {
@@ -40,7 +46,6 @@ in
     '';
     installPhase = ''
       mkdir -p $out
-      cp ${./style.css} $out/style.css
       cd public
       cp -r . $out/
     '';

projects/project-gestalt.org

@@ -1,5 +1,5 @@
 #+title: Project Gestalt
-[[./pg-logo.jpg]]
+[[file:pg-logo.jpg][Logo]]
 * Description
 A modification for the Stellaris - popular computer game. Stellaris uses its own proprietary game logic language, therefore I firstly reverse-engineered it and then designed the modification. Project Gestalt is an expansion to the game, that adds the ability for psionics to become energetic beings, and many other features. It is available in Russian and English languages and has currently ~6300 active subscribers on Steam in total. The modification demonstrates a wide positive feedback.
 * Links