Add java 17 preview (#243)

* Add java 17 preview

* Add required args

* Minor fixes after testing

* Looks like agents don't need these flags (at least in simple tests)

* Update docker-bake.hcl

17/debian/Dockerfile

@@ -0,0 +1,15 @@
+ARG version=4.10-6-jdk17-preview
+FROM jenkins/agent:$version
+
+ARG version
+LABEL Description="This is a base image, which allows connecting Jenkins agents via JNLP protocols" Vendor="Jenkins project" Version="$version"
+
+ARG user=jenkins
+
+USER root
+COPY ../../jenkins-agent /usr/local/bin/jenkins-agent
+RUN chmod +x /usr/local/bin/jenkins-agent &&\
+    ln -s /usr/local/bin/jenkins-agent /usr/local/bin/jenkins-slave
+USER ${user}
+
+ENTRYPOINT ["/usr/local/bin/jenkins-agent"]

docker-bake.hcl

@@ -4,12 +4,14 @@ group "linux" {
     "alpine_jdk11",
     "debian_jdk8",
     "debian_jdk11",
+    "debian_jdk17",
   ]
 }
 
 group "linux-arm64" {
   targets = [
     "debian_jdk11",
+    "debian_jdk17",
   ]
 }
 
@@ -23,7 +25,7 @@ group "linux-ppc64le" {
 
 # update this to use a newer build number for jenkins/docker image
 variable "AGENT_IMAGE_BUILD_NUMBER" {
-  default = "4"
+  default = "6"
 }
 
 variable "REGISTRY" {
@@ -106,3 +108,17 @@ target "debian_jdk11" {
   ]
   platforms = ["linux/amd64", "linux/arm64", "linux/s390x"]
 }
+
+target "debian_jdk17" {
+  dockerfile = "17/debian/Dockerfile"
+  context = "."
+  args = {
+    version = "${REMOTING_VERSION}-${AGENT_IMAGE_BUILD_NUMBER}-jdk17-preview"
+  }
+  tags = [
+    equal(ON_TAG, "true") ? "${REGISTRY}/${JENKINS_REPO}:${REMOTING_VERSION}-${BUILD_NUMBER}-jdk17-preview": "",
+    "${REGISTRY}/${JENKINS_REPO}:jdk17-preview",
+    "${REGISTRY}/${JENKINS_REPO}:latest-jdk17-preview",
+  ]
+  platforms = ["linux/amd64", "linux/arm64"]
+}