feat(dotfiles): add ability to apply dotfiles as any user (#133)

Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>
Co-authored-by: Muhammad Atif Ali <atif@coder.com>

dotfiles/run.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+DOTFILES_URI="${DOTFILES_URI}"
+DOTFILES_USER="${DOTFILES_USER}"
+
+if [ -n "$${DOTFILES_URI// }" ]; then
+  if [ -z "$DOTFILES_USER" ]; then
+    DOTFILES_USER="$USER"
+  fi
+
+  echo "✨ Applying dotfiles for user $DOTFILES_USER"
+
+  if [ "$DOTFILES_USER" = "$USER" ]; then
+    coder dotfiles "$DOTFILES_URI" -y 2>&1 | tee ~/.dotfiles.log
+  else
+    # The `eval echo ~"$DOTFILES_USER"` part is used to dynamically get the home directory of the user, see https://superuser.com/a/484280
+    # eval echo ~coder -> "/home/coder"
+    # eval echo ~root  -> "/root"
+
+    CODER_BIN=$(which coder)
+    DOTFILES_USER_HOME=$(eval echo ~"$DOTFILES_USER")
+    sudo -u "$DOTFILES_USER" sh -c "'$CODER_BIN' dotfiles '$DOTFILES_URI' -y 2>&1 | tee '$DOTFILES_USER_HOME'/.dotfiles.log"
+  fi
+fi