Fix dind startup and set default version envs

Jenkinsfile

@@ -22,9 +22,9 @@ spec:
         - name: DOCKER_TLS_CERTDIR
           value: ""
       args:
-        - |
-          set -euo pipefail
-          exec dockerd-entrypoint.sh --mtu=1400
+        - --mtu=1400
+        - --host=unix:///var/run/docker.sock
+        - --host=tcp://0.0.0.0:2375
       volumeMounts:
         - name: dind-storage
           mountPath: /var/lib/docker
@@ -64,6 +64,8 @@ spec:
     REGISTRY = 'registry.bstein.dev/bstein'
     FRONT_IMAGE = "${REGISTRY}/bstein-dev-home-frontend"
     BACK_IMAGE  = "${REGISTRY}/bstein-dev-home-backend"
+    VERSION_TAG = ''
+    SEMVER = ''
   }
   options {
     disableConcurrentBuilds()