feat: bump agent + readme

Dockerfile

@@ -4,7 +4,7 @@ RUN addgroup spring && useradd -g spring spring
 USER spring:spring
 
 # https://github.com/microsoft/ApplicationInsights-Java/releases
-ADD --chown=spring:spring https://github.com/microsoft/ApplicationInsights-Java/releases/download/3.4.19/applicationinsights-agent-3.4.19.jar /applicationinsights-agent.jar
+ADD --chown=spring:spring https://github.com/microsoft/ApplicationInsights-Java/releases/download/3.6.0/applicationinsights-agent-3.6.0.jar /applicationinsights-agent.jar
 
 COPY --chown=spring:spring docker/applicationinsights.json ./applicationinsights.json
 

README.md

@@ -1 +1,52 @@
 # docker-base-template based on Java 17
+This image is based on `eclipse-temurin:17-jre` with applicationinsights agent v3.6.0. 
+
+It is useful to run a SpringBoot application v2/v3.
+
+## How to use
+``` Dockerfile
+#
+# Build
+#
+FROM maven:3.9.3-amazoncorretto-17@sha256:4ab7db7bd5f95e58b0ba1346ff29d6abdd9b73e5fd89c5140edead8b037386ff AS buildtime
+WORKDIR /build
+COPY . .
+RUN mvn clean package -Dmaven.test.skip=true
+
+#
+# Package stage
+#
+FROM --platform=linux/amd64 amazoncorretto:17.0.9-alpine3.18@sha256:df48bf2e183230040890460ddb4359a10aa6c7aad24bd88899482c52053c7e17 as builder
+COPY --from=buildtime /build/target/*.jar application.jar
+RUN java -Djarmode=layertools -jar application.jar extract
+
+#
+# Run
+#
+FROM ghcr.io/pagopa/docker-base-springboot-openjdk17:v2.1.2@sha256:824a241756a32ac9eeef4585a3a266fb019d2c599337269b0c8b419de4c2df3e
+
+COPY --chown=spring:spring  --from=builder dependencies/ ./
+COPY --chown=spring:spring  --from=builder snapshot-dependencies/ ./
+
+# https://github.com/moby/moby/issues/37965#issuecomment-426853382
+RUN true
+COPY --chown=spring:spring  --from=builder spring-boot-loader/ ./
+COPY --chown=spring:spring  --from=builder application/ ./
+```
+
+
+## Application Insights Agent
+The agent uses the configuration `/docker/applicationinsights.json`.
+By default, the sampling is enabled
+ - dependency: 5%
+ - trace: 5%
+ - exception: 100%
+ - request: 100%
+
+If you want to customize the agent you can add your file in the `Dockerimage`
+
+``` Dockerfile
+FROM ghcr.io/pagopa/docker-base-springboot-openjdk17:v2.1.2@sha256:824a241756a32ac9eeef4585a3a266fb019d2c599337269b0c8b419de4c2df3e
+COPY --chown=spring:spring your/path/to/applicationinsights.json ./applicationinsights.json
+```
+

docker/applicationinsights.json

@@ -4,20 +4,24 @@
     "level": "INFO"
   },
   "sampling": {
-    "percentage": 5
-  },
-  "preview": {
-    "sampling": {
-      "overrides": [
-        {
-          "telemetryType": "exception",
-          "percentage": 100
-        },
-        {
-          "telemetryType": "request",
-          "percentage": 100
-        }
-      ]
-    }
+    "percentage": 5,
+    "overrides": [
+      {
+        "telemetryType": "dependency",
+        "percentage": 5
+      },
+      {
+        "telemetryType": "trace",
+        "percentage": 5
+      },
+      {
+        "telemetryType": "exception",
+        "percentage": 100
+      },
+      {
+        "telemetryType": "request",
+        "percentage": 100
+      }
+    ]
   }
 }