build/ci: call bazelisk from PATH instead ~

Change-Id: Ic0cd685f81d763ad05418626d514f2a17d8cb524
Reviewed-on: https://review.monogon.dev/c/monogon/+/1482
Reviewed-by: Serge Bazanski <serge@monogon.tech>
Reviewed-by: Leopold Schabel <leo@monogon.tech>
Tested-by: Jenkins CI
diff --git a/build/ci/jenkins-presubmit.groovy b/build/ci/jenkins-presubmit.groovy
index c0162c6..0950b15 100644
--- a/build/ci/jenkins-presubmit.groovy
+++ b/build/ci/jenkins-presubmit.groovy
@@ -21,8 +21,8 @@
                         gerritCheck checks: ['jenkins:test': 'RUNNING'], message: "Running on ${env.NODE_NAME}"
                         echo "Gerrit change: ${GERRIT_CHANGE_URL}"
                         sh "git clean -fdx -e '/bazel-*'"
-                        sh "JENKINS_NODE_COOKIE=dontKillMe ~/bazelisk test //..."
-                        sh "JENKINS_NODE_COOKIE=dontKillMe ~/bazelisk test -c dbg //..."
+                        sh "JENKINS_NODE_COOKIE=dontKillMe bazelisk test //..."
+                        sh "JENKINS_NODE_COOKIE=dontKillMe bazelisk test -c dbg //..."
                     }
                     post {
                         success {
@@ -45,9 +45,9 @@
                         gerritCheck checks: ['jenkins:gazelle': 'RUNNING'], message: "Running on ${env.NODE_NAME}"
                         echo "Gerrit change: ${GERRIT_CHANGE_URL}"
                         sh "git clean -fdx -e '/bazel-*'"
-                        sh "JENKINS_NODE_COOKIE=dontKillMe ~/bazelisk run //:gazelle-update-repos"
-                        sh "JENKINS_NODE_COOKIE=dontKillMe ~/bazelisk run //:gazelle -- update"
-                        sh "JENKINS_NODE_COOKIE=dontKillMe ~/bazelisk run //:go -- mod tidy"
+                        sh "JENKINS_NODE_COOKIE=dontKillMe bazelisk run //:gazelle-update-repos"
+                        sh "JENKINS_NODE_COOKIE=dontKillMe bazelisk run //:gazelle -- update"
+                        sh "JENKINS_NODE_COOKIE=dontKillMe bazelisk run //:go -- mod tidy"
 
                         script {
                             def diff = sh script: "git status --porcelain", returnStdout: true