tools: set env var to check if from docker

Signed-off-by: Ramon Roche <[email protected]>

Author: mrpollo

Tools/setup/Dockerfile

@@ -8,7 +8,6 @@ ENV LC_ALL=C.UTF-8
 ENV DISPLAY=:99
 ENV TERM=xterm
 ENV TZ=UTC
-ENV QEMU_CPU=max,pauth-impdef=on
 ENV RUNS_IN_DOCKER=true
 
 # SITL UDP PORTS

Tools/setup/ubuntu.sh

@@ -31,7 +31,7 @@ echo "[ubuntu.sh] Starting..."
 echo "[ubuntu.sh] arch: $INSTALL_ARCH"
 
 # detect if running in docker
-if [ -z "$RUNS_IN_DOCKER" ]; then
+if [ "$RUNS_IN_DOCKER" = "true" ]; then
 	echo "[ubuntu.sh] Running within docker, installing initial dependencies";
 	apt-get --quiet -y update && DEBIAN_FRONTEND=noninteractive apt-get --quiet -y install \
 		ca-certificates \