migrated to v4

public/v4/apps/nexus3.yml

@@ -0,0 +1,39 @@
+captainVersion: 4
+services:
+  $$cap_appname:
+    image: sonatype/nexus3:$$cap__version
+    volumes:
+      - $$cap_appname-data:/nexus-data
+    restart: always
+    environment: {}
+    caproverExtra:
+      containerHttpPort: "8081"
+caproverOneClickApp:
+  variables:
+    - id: $$cap__version
+      label: Version
+      defaultValue: 3.15.2
+      description: "Additional tags can be found here:
+        https://hub.docker.com/r/sonatype/nexus3/tags"
+  instructions:
+    start: >-
+      Nexus is the world's first and only universal repository solution that's
+      FREE to use. It supports Bower, Docker, Git LFS, Maven, npm, NuGet, PyPI,
+      Ruby Gems, Yum, Apt, Conan, R, CPAN, Raw (Universal),P2 ,Helm and ELPA.
+
+
+      Enter your Nexus Configuration parameters and click on next. 
+
+       Notes:
+
+      Default credentials are: admin / admin123
+
+
+      It can take some time (2-3 minutes) for the service to launch in a new container. Check the "Deployment" tab logs to determine once Nexus is ready.
+    end: Nexus is deployed and available as srv-captain--$$cap_appname:8081 to other
+      apps.
+  displayName: Nexus3
+  isOfficial: true
+  description: Nexus is a repository manager. It allows you to proxy, collect, and
+    manage your dependencies
+  documentation: Taken from https://hub.docker.com/r/sonatype/nexus3/