chore: configure renovate to bump image deps (open-telemetry#1599)

* chore: configure renovate to bump image deps

* chore: add tracetest and opensearch to renovate

.env

@@ -10,7 +10,7 @@ COLLECTOR_CONTRIB_IMAGE=otel/opentelemetry-collector-contrib:0.102.1
 FLAGD_IMAGE=ghcr.io/open-feature/flagd:v0.10.2
 GRAFANA_IMAGE=grafana/grafana:10.4.3
 JAEGERTRACING_IMAGE=jaegertracing/all-in-one:1.57
-# must also update version field in ./src/grafana/provisioning/datasources/opensearch.yml
+# must also update version field in ./src/grafana/provisioning/datasources/opensearch.yaml
 OPENSEARCH_IMAGE=opensearchproject/opensearch:2.14.0
 POSTGRES_IMAGE=postgres:16.3
 PROMETHEUS_IMAGE=quay.io/prometheus/prometheus:v2.52.0

renovate.json5

@@ -100,5 +100,38 @@
       "matchPackageNames": ["eclipse-temurin"],
       "enabled": false
     }
+  ],
+
+  "regexManagers": [
+    {
+      // Parse image version from .env file.
+      "fileMatch": [
+        ".env$"
+      ],
+      "datasourceTemplate": "docker",
+      "matchStrings": [
+        "IMAGE=(?<depName>.+):(?<currentValue>.+)"
+      ]
+    },
+    {
+      "fileMatch": [
+        "test/tracetesting/Dockerfile$"
+      ],
+      "datasourceTemplate": "docker",
+      "depNameTemplate": "kubeshop/tracetest",
+      "matchStrings": [
+        "IMAGE_VERSION=(?<currentValue>.+)"
+      ]
+    },
+    {
+      "fileMatch": [
+        "src/grafana/provisioning/datasources/opensearch.yaml$"
+      ],
+      "datasourceTemplate": "docker",
+      "depNameTemplate": "opensearchproject/opensearch",
+      "matchStrings": [
+        "version: (?<currentValue>.+)"
+      ]
+    }
   ]
-}
+}