add style from silvermone chromecast plugin

Dockerfile

@@ -1,8 +1,9 @@
-FROM roypur/inkscape:latest as base
+FROM roypur/stream-build:latest as base
 RUN ["mkdir", "-p", "/app/version"]
 COPY ["tv.json", "/app/setup/tv.json"]
 COPY ["backend/start.sh", "/app/start.sh"]
 COPY ["backend/sources.py", "/app/setup/sources.py"]
+COPY ["backend/style.js", "/app/setup/style.js"]
 COPY ["backend/stream.py", "/app/stream.py"]
 COPY ["backend/stream_providers.py", "/app/stream_providers.py"]
 COPY ["frontend/index.html", "/app/index.html"]
@@ -12,11 +13,12 @@ COPY ["frontend/style.css", "/app/style.css"]
 RUN ["chmod", "-R", "755", "/app"]
 RUN ["inkscape", "--export-area-page", "--export-width=256", "--export-height=256", "/app/favicon.svg", "--export-filename=/app/favicon.png"]
 RUN ["rm", "/app/favicon.svg"]
+RUN ["/app/setup/sources.py"]
+RUN ["/app/setup/style.js"]
+RUN ["rm", "-r", "/app/setup"]
 
 FROM roypur/stream-runtime:latest as venv
 COPY --from=base /app /app
-RUN ["/app/venv/bin/python3", "/app/setup/sources.py"]
-RUN ["rm", "-r", "/app/setup"]
 
 FROM scratch
 COPY --from=venv / /

backend/install.sh

@@ -1,5 +0,0 @@
-#!/usr/bin/env sh
-virtualenv --python=$(which python3) /app/venv
-source /app/venv/bin/activate
-pip install --upgrade pip
-pip install --upgrade streamlink youtube-dl tornado aiohttp aiohttp-socks

backend/style.js

@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+
+const fs = require("fs");
+const css = require("css");
+
+fs.readFile("/app/chromecast.css", "utf-8", (err, data) => {
+    const ast = css.parse(data);
+    for(const rule of ast.stylesheet.rules) {
+        const decls = [];
+        if(Symbol.iterator in Object(rule.declarations)) {
+            for(const decl of rule.declarations) {
+                const isNotUrl = !(decl.value.toLowerCase().startsWith("url"));
+                const isNotContent = !(decl.property.toLowerCase() == "content");
+                if(isNotContent && isNotUrl) {
+                    decls.push(decl);
+                }
+            }
+            rule.declarations = decls;
+        }
+    }
+    fs.appendFile("/app/style.css", css.stringify(ast, {"compress": true}), (err) => {
+        if(err !== null) {
+            console.log(err);
+        }
+    });
+});