diff --git a/install-origin.sh b/install-origin.sh
index 08a5b03..fe3b14e 100755
--- a/install-origin.sh
+++ b/install-origin.sh
@@ -269,7 +269,7 @@ test_ruby() {
 no_usable_ruby() {
   local ruby_exec
   IFS=$'\n' # Do word splitting on new lines only
-  for ruby_exec in $(which -a ruby); do
+  for ruby_exec in $(which -a ruby 2>/dev/null); do
     if test_ruby "$ruby_exec"; then
       IFS=$' \t\n' # Restore IFS to its default value
       return 1
@@ -360,8 +360,14 @@ fi
 HOMEBREW_CORE="${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core"
 
 if [[ "${EUID:-${UID}}" == "0" ]]; then
-  abort "Don't run this as root!"
-elif [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]; then
+  # Allow Azure Pipelines/GitHub Actions/Docker/Concourse/Kubernetes to do everything as root (as it's normal there)
+  if ! [[ -f /proc/1/cgroup ]] ||
+     ! grep -E "azpl_job|actions_job|docker|garden|kubepods" -q /proc/1/cgroup; then
+    abort "Don't run this as root!"
+  fi
+fi
+
+if [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]; then
   abort "$(cat <<EOABORT
 The Homebrew prefix, ${HOMEBREW_PREFIX}, exists but is not searchable.
 If this is not intentional, please restore the default permissions and
diff --git a/install.sh b/install.sh
index 427fc44..f3a9302 100755
--- a/install.sh
+++ b/install.sh
@@ -275,7 +275,7 @@ test_ruby() {
 no_usable_ruby() {
   local ruby_exec
   IFS=$'\n' # Do word splitting on new lines only
-  for ruby_exec in $(which -a ruby); do
+  for ruby_exec in $(which -a ruby 2>/dev/null); do
     if test_ruby "$ruby_exec"; then
       IFS=$' \t\n' # Restore IFS to its default value
       return 1
@@ -366,8 +366,14 @@ fi
 HOMEBREW_CORE="${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core"
 
 if [[ "${EUID:-${UID}}" == "0" ]]; then
-  abort "Don't run this as root!"
-elif [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]; then
+  # Allow Azure Pipelines/GitHub Actions/Docker/Concourse/Kubernetes to do everything as root (as it's normal there)
+  if ! [[ -f /proc/1/cgroup ]] ||
+     ! grep -E "azpl_job|actions_job|docker|garden|kubepods" -q /proc/1/cgroup; then
+    abort "Don't run this as root!"
+  fi
+fi
+
+if [[ -d "${HOMEBREW_PREFIX}" && ! -x "${HOMEBREW_PREFIX}" ]]; then
   abort "$(cat <<EOABORT
 The Homebrew prefix, ${HOMEBREW_PREFIX}, exists but is not searchable.
 If this is not intentional, please restore the default permissions and
diff --git a/uninstall.sh b/uninstall.sh
index 42b1fae..44409be 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -227,7 +227,7 @@ fi
 if [[ -s $HOMEBREW_REPOSITORY/.gitignore ]]; then
   gitignore=$(<"$HOMEBREW_REPOSITORY/.gitignore")
 else
-  gitignore=$(curl -fsSL https://raw.githubusercontent.com/Homebrew/brew/master/.gitignore)
+  gitignore=$(curl -fsSL https://cdn.jsdelivr.net/gh/Homebrew/brew/.gitignore)
 fi
 [[ -n $gitignore ]] || abort "Failed to fetch Homebrew .gitignore!"