Update build to have hold and release on develop

Author: JamesPace-GBI

.circleci/config.yml

@@ -1,9 +1,77 @@
 version: 2
+
+job-settings:
+  defaults:
+    agent-only: &defaults-agent-only
+      docker:
+        - image: groupbyinc/circleci-java
+
+workflow-settings:
+  context: &job-context
+    context: org-global
+
+main_branch_only: &main_branch_only
+  filters:
+    branches:
+      only:
+        - develop
+
+workspace_key: &workspace_key
+  key: v1-repo-{{ .Branch }}-{{ .Revision }}
+
+dependency_cache_key: &dependency_cache_key
+  run:
+    name: Generate Dependency Cache Key
+    command: /scripts/checksum.sh /tmp/checksum
+
+cache_key: &cache_key
+  key: v1-dependencies-{{checksum "/tmp/checksum"}}-{{ .Revision }}
+
+setup_builder: &setup_builder
+  run:
+    name: Initialize Build Agent
+    command: /scripts/setup.sh
+
 jobs:
   build:
-    docker:
-    - image: circleci/openjdk:8u171-jdk 
+    <<: *defaults-agent-only
     steps:
-    - checkout
-    - run: mvn clean install
-    - run: mvn surefire:test -Punit
+      - checkout
+      - *dependency_cache_key
+      - restore_cache: *cache_key
+      - *setup_builder
+      - run: mvn clean install
+      - run: mvn surefire:test -Punit
+      - save_cache:
+          <<: *cache_key
+          paths:
+            - ~/.m2
+      - save_cache:
+          <<: *workspace_key
+          paths:
+            - ~/.ssh
+            - ~/project
+  release:
+    <<: *defaults-agent-only
+    steps:
+      - restore_cache: *workspace_key
+      - *dependency_cache_key
+      - restore_cache: *cache_key
+      - *setup_builder
+      - run: mvn -B release:prepare release:perform
+
+workflows:
+  version: 2
+  build-and-push:
+    jobs:
+      - build: *job-context
+      - hold:
+          <<: *main_branch_only
+          type: approval
+          requires:
+            - build
+      - release:
+          <<: *main_branch_only
+          <<: *job-context
+          requires:
+            - hold