diff --git a/archplasma/Dockerfile b/archplasma/Dockerfile
index 9c97fdf..aa62c3c 100644
--- a/archplasma/Dockerfile
+++ b/archplasma/Dockerfile
@@ -7,16 +7,23 @@ ENV STARTXBIN=startplasma-x11
 
 # Install packages
 RUN --mount=type=cache,sharing=locked,target=/var/cache/pacman \
-    pacman -Syu --ask 4 --needed \
-    tigervnc \
-    cuda openssh vim pacman-contrib rsync git \
-    plasma konsole kate dolphin kompare kcalc \
-    jack2 ttf-dejavu \
-    firefox firefox-decentraleyes firefox-ublock-origin \
-    torbrowser-launcher \
-    shotwell ffmpegthumbs ark okular \
+    pacman-key --init \
+    && sed -i '/ParallelDownloads/c ParallelDownloads = 10' /etc/pacman.conf \
+    && pacman -Sy --ask 4 archlinux-keyring \
+    && pacman -Su --ask 4 --needed \
+        sudo bash-completion \
+        tigervnc \
+        cuda openssh vim pacman-contrib rsync git \
+        plasma konsole kate dolphin kompare kcalc \
+        jack2 ttf-dejavu \
+        firefox firefox-decentraleyes firefox-ublock-origin \
+        torbrowser-launcher \
+        shotwell ffmpegthumbs ark okular \
     && pacman -Scc --ask 4 \
-    && echo 'Cmnd_Alias MISCELLANEOUS =   /usr/bin/pacman -S' >/etc/sudoers.d/01-MISCELLANEOUS
+    && useradd --create-home --gid users --shell /usr/bin/bash user \
+    && echo 'user ALL=(ALL:ALL) NOPASSWD: MISCELLANEOUS, /usr/bin/pacman -S' >/etc/sudoers.d/zz-DOCKER \
+    && echo 'Defaults lecture = never' >>/etc/sudoers.d/zz-DOCKER \
+    && passwd -l root >/dev/null 2>&1
 
 # configure nvidia container runtime
 # https://github.com/NVIDIA/nvidia-container-runtime#environment-variables-oci-spec