Make sure to use Java 17 as runtime in the container image

The project is built in CI using Java 17. As such, running the image with a lower version of the runtime will not work

Author: rm3l

backend/api/build.gradle

@@ -64,7 +64,7 @@ jib {
         image = "${project.group}/${project.name}"
     }
     from {
-        image = 'openjdk:16-alpine'
+        image = 'openjdk:17-alpine'
     }
     container {
         labels = [

backend/crawlers/discoverdev.io/build.gradle

@@ -54,7 +54,7 @@ jib {
         image = "${project.group}/${project.name}"
     }
     from {
-        image = 'openjdk:16-alpine'
+        image = 'openjdk:17-alpine'
     }
     container {
         labels = [

backend/crawlers/engineeringblogs.xyz/build.gradle

@@ -53,7 +53,7 @@ jib {
         image = "${project.group}/${project.name}"
     }
     from {
-        image = 'openjdk:16-alpine'
+        image = 'openjdk:17-alpine'
     }
     container {
         labels = [

backend/crawlers/rm3l.org/build.gradle

@@ -53,7 +53,7 @@ jib {
         image = "${project.group}/${project.name}"
     }
     from {
-        image = 'openjdk:16-alpine'
+        image = 'openjdk:17-alpine'
     }
     container {
         labels = [