fix(docker): Lower docker version to 19.03.6 (#682)

Fixes #689.

Author: BYK

install.sh

@@ -11,7 +11,7 @@ dcr="$dc run --rm"
 log_file="sentry_install_log-`date +'%Y-%m-%d_%H-%M-%S'`.txt"
 exec &> >(tee -a "$log_file")
 
-MIN_DOCKER_VERSION='19.03.8'
+MIN_DOCKER_VERSION='19.03.6'
 MIN_COMPOSE_VERSION='1.24.1'
 MIN_RAM=2400 # MB