Improve naming and formatting

Author: SimonBaeumer

.evergreen-functions.yml

@@ -29,6 +29,7 @@ variables:
       - otel_collector_endpoint
       - otel_parent_id
       - otel_trace_id
+      - build_tag_type
       - registry
       - requester
       - skip_tags

.evergreen-periodic-builds.yaml

@@ -10,9 +10,9 @@ parameters:
     value: 00:00
     description: Pin tags at this time of the day. Midnight by default.
 
-  - key: build_tag_id_prefix
+  - key: build_tag_type
     value: release
-    description: Prefix for periodic builds for the image. This identifies a periodic build.
+    description: The build type, this is added to the image tag. Used for periodic and release builds.
 
 variables:
   - &setup_group

.evergreen.yml

@@ -174,9 +174,9 @@ parameters:
     value: 10:00
     description: Pin tags at this time of the day. Midnight by default for periodic and 10 for releases.
 
-  - key: build_tag_id_prefix
+  - key: build_tag_type
     value: release
-    description: Prefix for release builds for the image. This identifies a release build.
+    description: The build type, this is added to the image tag. Used for periodic and release builds.
 
   - key: OVERRIDE_VERSION_ID
     value: ""

pipeline.py

@@ -243,7 +243,7 @@ def build_id() -> str:
     """
 
     try:
-        build_tag_id_prefix = os.environ["build_tag_id_prefix"]
+        build_tag_type = os.environ["build_tag_type"]
     except KeyError:
         pass
 
@@ -264,7 +264,7 @@ def build_id() -> str:
 
     string_time = date.strftime("%Y%m%dT%H%M%SZ")
 
-    return f"{build_tag_id_prefix}-{string_time}"
+    return f"{string_time}-{build_tag_type}"
 
 
 def get_release() -> Dict: