chore: remove alternatives workarounds (LMK if they are still required)

Containerfile

@@ -26,10 +26,9 @@ RUN --mount=type=cache,dst=/var/cache/rpm-ostree \
     --mount=type=bind,from=config,src=/rpms,dst=/tmp/rpms \
     --mount=type=bind,from=akmods,src=/rpms/ublue-os,dst=/tmp/akmods-rpms \
     --mount=type=bind,from=kernel,src=/tmp/rpms,dst=/tmp/kernel-rpms \
-    mkdir -p /var/lib/alternatives && \
     chmod +x /ctx/build_scripts/*.sh && \
-    for script in /ctx/build_scripts/*.sh; do $script; done && \
-    ostree container commit && \
-    mkdir -p /var/lib && mv /staged-alternatives /var/lib/alternatives && \
-    mkdir -p /var/tmp && \
-    chmod -R 1777 /var/tmp
+    for script in /ctx/build_scripts/*.sh; do $script; done \
+    && \
+    rpm-ostree cleanup -m && \
+    rm -rf /tmp/* /var/* && \
+    ostree container commit

build_scripts/000-setup.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/bash
+
+set -ouex pipefail
+
+mkdir -p /var/lib/alternatives

build_scripts/006-gnome-software.sh → build_scripts/006-remove-footguns.sh

@@ -1,6 +1,9 @@
 #!/usr/bin/bash
 
-set -ouex pipefail
+set -eoux pipefail
+
+rm -f /usr/bin/chsh
+rm -f /usr/bin/lchsh
 
 # prevent gnome software from warning about dkms secureboot as these warnings
 # would duplicate warnings provided by ublue already. we don't want confusion

build_scripts/998-post-install.sh

@@ -17,5 +17,3 @@ ln -s "/usr/share/fonts/google-noto-sans-cjk-fonts" "/usr/share/fonts/noto-cjk"
 
 rm -f /etc/yum.repos.d/_copr_ublue-os_staging.repo
 rm -f /etc/yum.repos.d/_copr_kylegospo_oversteer.repo
-
-mv /var/lib/alternatives /staged-alternatives