fix: 🚑 fix concat issue

Containerfile

@@ -1,4 +1,4 @@
-FROM python:3.12 as builder
+FROM python:3.12 AS builder
 
 RUN pip install poetry
 
@@ -14,7 +14,7 @@ RUN touch README.md
 
 RUN --mount=type=cache,target=$POETRY_CACHE_DIR poetry install --without dev --no-root
 
-FROM python:3.12-slim as runtime
+FROM python:3.12-slim AS runtime
 
 RUN pip install poetry
 

src/discord_notifier/__main__.py

@@ -87,7 +87,7 @@ try:
                     loginfo = client.get(f"/api/repos/{repo_id}/logs/{pipeline_number}/{step['id']}").json()
                     logdata = b""
                     for logline in loginfo:
-                        logdata += b64decode(logline["data"]) + "\n"
+                        logdata += b64decode(logline["data"]) + b"\n"
                     logfile_webhook.add_file(logdata, f"{step['name']}.ansi")
 except KeyError:
     webhook.add_embed(DiscordEmbed(