Update openjdk Docker tag to v17

renovate[bot] · web-flow · commit 76845a3e2fef · 2025-06-30T15:12:15.000Z
diff --git a/client-bob/Dockerfile b/client-bob/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:8-jdk-alpine
+FROM openjdk:17-jdk-alpine
 
 MAINTAINER Jonas Hecht
 
diff --git a/server-alice/Dockerfile b/server-alice/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:8-jdk-alpine
+FROM openjdk:17-jdk-alpine
 
 MAINTAINER Jonas Hecht
 
diff --git a/server-tom/Dockerfile b/server-tom/Dockerfile
@@ -1,4 +1,4 @@
-FROM openjdk:8-jdk-alpine
+FROM openjdk:17-jdk-alpine
 
 MAINTAINER Jonas Hecht
 
