fix: CURRENT_DATETIME

Author: a5chin

.github/workflows/publish-devcontainer.yml

@@ -37,7 +37,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set current datetime as env variable
-        run: CURRENT_DATETIME=$(date +'%Y-%m-%dT%H:%M:%S%z')
+        run: CURRENT_DATETIME=$(date --iso-8601=seconds) >> $GITHUB_ENV
 
       - name: Extract metadata
         id: meta
@@ -50,7 +50,7 @@ jobs:
             type=raw,value=latest,enable={{is_default_branch}}
           labels: |
             maintainer=a5chin <[email protected]>
-            org.opencontainers.image.created=${{ CURRENT_DATETIME }}
+            org.opencontainers.image.created=${{ env.CURRENT_DATETIME }}
             org.opencontainers.image.url=https://github.com/a5chin/python-uv
             org.opencontainers.image.source=https://github.com/a5chin/python-uv
             org.opencontainers.image.vendor=a5chin <[email protected]>