feat: adding curl to distrolles image

Author: ericchaves

Dockerfile

@@ -0,0 +1,18 @@
+# Stage 1: Use debian to install curl and gather its dependencies
+FROM debian:11-slim AS curl-deps
+RUN apt-get update && apt-get install -y curl
+RUN mkdir -p /tmp/curl-deps
+RUN cp $(ldd /usr/bin/curl | grep -v linux-vdso.so.1 | awk '{print $3}' | grep -v '^$') /tmp/curl-deps/
+RUN cp /usr/bin/curl /tmp/curl-deps/
+
+# Stage 2: Final distroless image
+FROM gcr.io/distroless/java17-debian11
+COPY --from=curl-deps /tmp/curl-deps/* /usr/lib/
+COPY --from=curl-deps /usr/bin/curl /usr/bin/
+
+# Configure the application
+EXPOSE 8080
+ENV JAVA_TOOL_OPTIONS="-XX:+UseContainerSupport -XX:MaxRAMPercentage=75"
+COPY build/libs/app.jar /app/app.jar
+WORKDIR /app
+CMD ["app.jar"]

build.gradle.kts

@@ -212,6 +212,8 @@ tasks.javadoc {
     }
 }
 
+// Original Jib configuration (commented out in favor of custom Dockerfile with curl)
+/*
 jib {
     from {
         platforms {
@@ -231,6 +233,17 @@ jib {
         mainClass = mainClassKt
     }
 }
+*/
+
+// Add Docker build task for custom Dockerfile
+tasks.register("buildDocker") {
+    dependsOn("shadowJar")
+    doLast {
+        exec {
+            commandLine("docker", "build", "-t", "mock-oauth2-server:latest", ".")
+        }
+    }
+}
 
 (components["java"] as AdhocComponentWithVariants).withVariantsFromConfiguration(configurations["shadowRuntimeElements"]) {
     skip()

docker-compose-ssl.yaml

@@ -3,6 +3,12 @@ version: "3.1"
 services:
   mock-oauth2-server:
     image: mock-oauth2-server:latest
+    healthcheck:
+      test: ["CMD", "curl", "--retry", "7", "--retry-delay", "1", "--retry-connrefused", "-sk", "-f", "https://localhost:8080/isalive"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
     ports:
       - "8080:8080"
     volumes:
@@ -11,3 +17,4 @@ services:
       LOG_LEVEL: "debug"
       SERVER_PORT: 8080
       JSON_CONFIG_PATH: /app/config.json
+

docker-compose.yaml

@@ -3,6 +3,12 @@ version: "3.1"
 services:
   mock-oauth2-server:
     image: mock-oauth2-server:latest
+    healthcheck:
+      test: ["CMD", "curl", "--retry", "7", "--retry-delay", "1", "--retry-connrefused", "-f", "http://localhost:8080/isalive"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 5s
     ports:
       - "8080:8080"
     volumes: