fix: cAdvisor metrics compliance - name and id label values

CHANGELOG.md

@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.3] - 2021-07-12
+### Fixed
+- compliance with cAdvisor:
+  * container name (`name`) never starts with `/`, dropping leading slash too
+  * container id (`id`) is prefixed with `/docker/`
+
 ## [1.0.2] - 2021-06-30
 ### Fixed
 - dockermon textfile metrics documentation string now correctly prefixed with `# `

src/metric-generators/dockermon.sh

@@ -15,9 +15,9 @@ CONTAINERS=$(docker ps -a -q)
 
 for i_container in ${CONTAINERS}; do
   i_container_status="$(docker inspect "${i_container}")"
-  i_container_name="$(echo "${i_container_status}" | jq -r '.[].Name')"
+  i_container_name="$(echo "${i_container_status}" | jq -r '.[].Name' | sed 's|^/||')"
   i_container_restart_count="$(echo "${i_container_status}" | jq -r '.[].RestartCount')"
-  i_container_id="$(echo "${i_container_status}" | jq -r '.[].Id')"
+  i_container_id="/docker/$(echo "${i_container_status}" | jq -r '.[].Id')"
   test -n "${i_container_name}"
   echo -n "${i_container_restart_count}" | grep -Eq "^[0-9]+$"
   echo -n "${i_container_id}" | grep -Eq "^[a-fA-F0-9]{12,}$"