Proper name for JSON format of snapshot record

Sandbox renamed to dev in the deploy pipeline

.drone.yml

@@ -28,12 +28,12 @@ services:
 
 kind: pipeline
 type: docker
-name: Sandbox deploy
+name: Dev deploy
 
 steps:
 - name: build
   # image: golang:1.17-buster # this one is used in production
-  image: golang:1.17-bullseye # this one is used in sandbox
+  image: golang:1.17-bullseye # this one is used in dev
   commands:
   - go mod tidy
   - make build
@@ -80,7 +80,7 @@ name: Production deploy
 steps:
 - name: build
   image: golang:1.17-buster # this one is used in production
-  #image: golang:1.17-bullseye # this one is used in sandbox
+  #image: golang:1.17-bullseye # this one is used in dev
   commands:
   - go mod tidy
   - make build

apps/snapshots.go

@@ -21,9 +21,9 @@ const keySplitCharacter = ":"
 
 // Snapshot contains metadata about a single snapshot
 type Snapshot struct {
-	AppName   string
-	TimeStamp int64
-	Labels    []string
+	AppName   string   `json:"app_name"`
+	TimeStamp int64    `json:"ts"`
+	Labels    []string `json:"labels"`
 }
 
 // SnapshotIndexLine is struct holding information about a single snapshot