build: enable running deploy script from other directories than the root directory

This commit modifies the script `deploy/build_env/services-linux/run_asapo.sh`
so that we can call it from directories other than the project root directory.
When developing on a local machine, this is very convenient because we
can build changes from a build directory and then directly run the
deploy script from this build directory.

deploy/build_env/services-linux/run_asapo.sh

 #!/bin/bash
 
-# The value of `source_build_dir` is either "$1" or "build" if no argument is provided
-# to the script.
-source_build_dir="${1:-build}"
+# Usage:
+#   bash run_asapo.sh [source_build_dir]
+#
+# Arguments:
+#   source_build_dir  directory that contains the binaries to deploy.
+#                     The default value is $project_project_root_dir/build where
+#                     $project_project_root_dir is the root directory of the ASAPO project.
+
+# Calculate the path of `project_root_dir` from the current script directory.
+project_root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && git rev-parse --show-toplevel)"
+# The value of `source_build_dir` is either "$1" or "$project_root_dir/build"
+# if no argument is provided to the script.
+source_build_dir="${1:-$project_root_dir/build}"
 
 cp "$source_build_dir"/authorizer/asapo-authorizer /asapo-authorizer
 cp "$source_build_dir"/discovery/asapo-discovery /asapo-discovery
@@ -11,17 +21,17 @@ cp "$source_build_dir"/file_transfer/asapo-file-transfer /asapo-file-transfer
 cp "$source_build_dir"/receiver/receiver /receiver
 cp "$source_build_dir"/monitoring/monitoring_server/asapo-monitoring-server /asapo-monitoring-server
 
-cp deploy/asapo_services_light/*json /
-cp deploy/asapo_services_light/envoy.yaml /
+cp "$project_root_dir"/deploy/asapo_services_light/*json /
+cp "$project_root_dir"/deploy/asapo_services_light/envoy.yaml /
 
 # Several receiver configs (tcp and fabric) are required for tests
-cp deploy/asapo_services_light/receiver.json /receiver_tcp.json
-cp deploy/build_env/services-linux/receiver_fabric.json /
-cp deploy/build_env/services-linux/receiver_kafka.json /
+cp "$project_root_dir"/deploy/asapo_services_light/receiver.json /receiver_tcp.json
+cp "$project_root_dir"/deploy/build_env/services-linux/receiver_fabric.json /
+cp "$project_root_dir"/deploy/build_env/services-linux/receiver_kafka.json /
 
-cp deploy/build_env/services-linux/discovery.json /
-cp deploy/build_env/services-linux/*key /
-cp deploy/build_env/services-linux/supervisord.conf /etc/
+cp "$project_root_dir"/deploy/build_env/services-linux/discovery.json /
+cp "$project_root_dir"/deploy/build_env/services-linux/*key /
+cp "$project_root_dir"/deploy/build_env/services-linux/supervisord.conf /etc/
 
 cp "$source_build_dir"/deploy/asapo_services_light/nginx.conf /etc/nginx/nginx.conf