OP#176 fix quotes

README.md

@@ -14,3 +14,5 @@ However we did a few changes to adjust the following:
 
 * the entire build flow is now based on the Dockerfile, no external make step. This allows using a Jenkins CI/CD pipeline for both build and placing the image in a package registry, so the image can be used in Kubernetes via CI/CD. All manual steps are removed.
 * we moved away from CentOS 7 as base to Alpine, which creates a much smaller image footprint while providing the very same functionality.
+
+## Usage

start.sh

@@ -14,12 +14,12 @@ function shutdown() {
   pkill -SIGINT postgresql-prometheus-adapter
 }
 
-adapter_send_timeout=${adapter_send_timeout:-'30s'}
-web_listen_address="${web_listen_address:-':9201'}"
-web_telemetry_path="${web_telemetry_path:-'/metrics'}"
-log_level="${log_level:-'info'}"
-log_format="${log_format:-'logfmt'}"
-pg_partition="${pg_partition:-'hourly'}"
+adapter_send_timeout=$(echo "${adapter_send_timeout:-'30s'}" | tr -d "'")
+web_listen_address=$(echo "${web_listen_address:-':9201'}" | tr -d "'")
+web_telemetry_path=$(echo "${web_telemetry_path:-'/metrics'}" | tr -d "'")
+log_level=$(echo "${log_level:-'info'}" | tr -d "'")
+log_format=$(echo "${log_format:-'logfmt'}" | tr -d "'")
+pg_partition=$(echo "${pg_partition:-'hourly'}" | tr -d "'")
 pg_commit_secs=${pg_commit_secs:-30}
 pg_commit_rows=${pg_commit_rows:-20000}
 pg_threads="${pg_threads:-1}"