feat(snaplet): use SNAPLET_TARGET_DB_NAME to specify specific databases (#13)

Add `SNAPLET_TARGET_DB_NAME` variable for path directory to store
different databases in the same S3 bucket

Exampe usage here:
SubaruTechShare/techshare-backend#186

Author: oycyc

lib/snaplet/Taskfile.yaml

@@ -86,13 +86,14 @@ tasks:
       vars:
         - SNAPLET_BUCKET
         - SNAPSHOT_ENV
+        - SNAPLET_TARGET_DB_NAME
     cmds:
-      - aws s3 cp --sse=AES256 --recursive {{.SNAPSHOT_PATH}} {{.SNAPLET_BUCKET}}/{{.SNAPSHOT_ENV}}/{{.SNAPSHOT_NAME}}
+      - aws s3 cp --sse=AES256 --recursive {{.SNAPSHOT_PATH}} {{.SNAPLET_BUCKET}}/{{.SNAPLET_TARGET_DB_NAME}}/{{.SNAPSHOT_ENV}}/{{.SNAPSHOT_NAME}}
       - |
         if [ "{{.UPLOAD_AS_LATEST}}" -eq "true" ]; then
           # We first remove everything so there are no artifacts leftover from a previous upload that we're not overwriting.
-          aws s3 rm --recursive {{.SNAPLET_BUCKET}}/{{.SNAPSHOT_ENV}}/latest
-          aws s3 cp --sse=AES256 --recursive {{.SNAPSHOT_PATH}} {{.SNAPLET_BUCKET}}/{{.SNAPSHOT_ENV}}/latest
+          aws s3 rm --recursive {{.SNAPLET_BUCKET}}/{{.SNAPLET_TARGET_DB_NAME}}/{{.SNAPSHOT_ENV}}/latest
+          aws s3 cp --sse=AES256 --recursive {{.SNAPSHOT_PATH}} {{.SNAPLET_BUCKET}}/{{.SNAPLET_TARGET_DB_NAME}}/{{.SNAPSHOT_ENV}}/latest
         fi
 
   download:
@@ -115,8 +116,9 @@ tasks:
       vars:
         - SNAPLET_BUCKET
         - SNAPSHOT_ENV
+        - SNAPLET_TARGET_DB_NAME
     cmds:
-      - aws s3 cp --quiet --sse=AES256 --recursive {{.SNAPLET_BUCKET}}/{{.SNAPSHOT_ENV}}/{{.RESTORE_SNAPSHOT}} {{.SNAPSHOT_PATH}}
+      - aws s3 cp --quiet --sse=AES256 --recursive {{.SNAPLET_BUCKET}}/{{SNAPLET_TARGET_DB_NAME}}/{{.SNAPSHOT_ENV}}/{{.RESTORE_SNAPSHOT}} {{.SNAPSHOT_PATH}}
       - printf "\n\n⬇ Snapshot downloaded to {{.SNAPSHOT_PATH}}\n\n"
 
   restore: