diff --git a/container/theme/build.sh b/container/theme/build.sh
new file mode 100644
index 000000000..63d3a72fe
--- /dev/null
+++ b/container/theme/build.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+
+echo "Starting theme building process..."
+
+# Install
+apt update
+apt install -y ca-certificates curl gnupg
+mkdir -p /etc/apt/keyrings
+curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
+
+NODE_MAJOR=20
+echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_$NODE_MAJOR.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
+
+apt update
+apt install nodejs -y
+
+# Build
+npm ci --omit dev
+su www-data -s npm run build
+
+# Cleanup
+npm cache clean --force
+apt purge curl gnupg nodejs -y
+apt autoremove -y
+rm -r /etc/apt/sources.list.d/nodesource.list
+rm -r /etc/apt/keyrings/nodesource.gpg
+
+rm -rf /app/node_modules/
+
+echo "Theme building process complete. Cleaned up all dependecies to save space."
\ No newline at end of file