Python 3.8 support (#44)

Co-authored-by: Manatsawin Hanmongkolchai <manatsawin+git@lmwn.com>

Dockerfile

@@ -1,7 +1,7 @@
-FROM python:3.7-buster
+FROM python:3.10-bullseye
 ENV PYTHONUNBUFFERED=true
 
-RUN wget -O /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v1.15.3/bin/linux/amd64/kubectl && \
+RUN wget -O /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v1.24.0/bin/linux/amd64/kubectl && \
     chmod +x /usr/local/bin/kubectl
 
 COPY . /app/

eastern/cli.py

@@ -202,7 +202,7 @@ def job(ctx, file, namespace, tag, edit, timeout, **kwargs):
     manifest = format_yaml(file, namespace, edit=edit, extra=kwargs["set"], print=False)
 
     # Modify the name to contain imageTag
-    manifest = list(yaml.load_all(manifest))
+    manifest = list(yaml.safe_load_all(manifest))
 
     found_job = False
     for item in manifest:

eastern/kubeyml_helper.py

@@ -24,7 +24,7 @@ def is_rolling_resource(doc):
 
 
 def get_supported_rolling_resources(text):
-    yml = yaml.load_all(text)
+    yml = yaml.safe_load_all(text)
     results = []
     for doc in yml:
         if is_rolling_resource(doc):

eastern/yaml_formatter/utils.py

@@ -1,10 +1,10 @@
-import collections
+import collections.abc
 from pathlib import Path
 
 
 def flatten(l):
     for el in l:
-        if isinstance(el, collections.Iterable) and not isinstance(el, str):
+        if isinstance(el, collections.abc.Iterable) and not isinstance(el, str):
             for sub in flatten(el):
                 yield sub
         else:

setup.py

@@ -7,12 +7,13 @@
     description="Simple Kubernetes Deployment",
     long_description=open(os.path.join(os.path.dirname(__file__), "README.md")).read(),
     long_description_content_type="text/markdown",
-    version="4.5.1",
+    version="5.0.0",
     packages=find_packages(),
     url="https://github.com/wongnai/eastern",
-    install_requires=["Click~=6.7", "click-log~=0.3.2", "PyYAML~=4.2b4", "stevedore~=1.29.0", "pre-commit~=1.18.3"],
+    install_requires=["Click~=6.7", "click-log~=0.3.2", "PyYAML~=6.0", "stevedore~=1.29.0"],
     setup_requires=["pytest-runner"],
     tests_require=["pytest", "pytest-asyncio"],
+    python_requires=">=3.9",
     entry_points={
         "console_scripts": ["eastern = eastern.cli:cli"],
         "eastern.command": [