diff --git a/Dockerfile b/Dockerfile
index 8d9cee7..0f124fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,14 +1,15 @@
 # Start with a official gitea runner image based on ubuntu with node installed
 FROM docker.gitea.com/runner-images:ubuntu-latest-slim
 
+# Install system dependencies
+RUN apt-get update && \
+    apt-get install -y sudo bash jq xz-utils curl && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
 # Install Nix as a multi-user installation
 RUN curl -L https://nixos.org/nix/install | sh -s -- --daemon
-
-# 2. Set the environment variables globally for all following RUN commands
-ENV USER=root
-ENV PATH="/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin"
-ENV NIX_SSL_CERT_FILE="/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt"
-ENV NIX_PATH="/nix/var/nix/profiles/per-user/root/channels"
+ENV PATH="/nix/var/nix/profiles/default/bin:$PATH"
 
 # Enable flakes and nix-command
 RUN mkdir -p /etc/nix && \