[BRE-915] Update and harden container images (#412)

* Update base image for get-checksum to gcr.io/distroless/python3-debian12:nonroot

* Update base image in version-bump to gcr.io/distroless/python3-debian12:nonroot

* Remove unnecessary pip install commands from Dockerfile

* Refactor Dockerfile to use python:3-slim base image and streamline package installation

* Refactor Dockerfile to improve build process and update main.py to use xml.etree.ElementTree

* Add step to fix file permissions in test-version-bump workflow

* Remove file permission fix step from test-version-bump workflow and update Dockerfile to use non-root base image

* Update crowdin

crowdin/Dockerfile

@@ -1,4 +1,4 @@
-FROM crowdin/cli:3.19.4
+FROM crowdin/cli:4.9.0
 
 RUN apk --no-cache add curl git jq gnupg;
 

get-checksum/Dockerfile

@@ -1,12 +1,9 @@
-FROM python:3-slim
+FROM gcr.io/distroless/python3-debian12:nonroot
 
 ADD . /app
 
 WORKDIR /app
 
-RUN pip3 install lxml --target=/app
-RUN pip3 install pyyaml --target=/app
-
-ENV PYTHONPATH /app
+ENV PYTHONPATH=/app
 
 ENTRYPOINT [ "python", "/app/main.py" ]

version-bump/Dockerfile

@@ -1,13 +1,13 @@
-FROM python:3-slim
-
-ADD . /app
+FROM python:3-slim AS builder
 
 WORKDIR /app
+RUN pip3 install --no-cache-dir pyyaml --target=.
+ADD ./main.py .
 
-RUN pip3 install lxml --target=/app
-RUN pip3 install pyyaml --target=/app
+FROM gcr.io/distroless/python3-debian12
 
-ENV PYTHONPATH /app
+WORKDIR /app
+COPY --from=builder /app /app
+ENV PYTHONPATH=/app
 
-CMD ["/app/main.py"]
-ENTRYPOINT [ "python", "-u" ]
+ENTRYPOINT ["/usr/bin/python3", "-u", "/app/main.py"]

version-bump/main.py

@@ -2,7 +2,7 @@ import os
 import json
 import plistlib
 import re
-import lxml.etree as ET
+import xml.etree.ElementTree as ET
 import yaml
 
 
@@ -58,7 +58,7 @@ def update_xml(version, file_path):
             f.write(data_new)
 
     # Microsoft .NET project files
-    elif myroot.attrib.has_key("Sdk") and "Microsoft.NET.Sdk" in myroot.attrib["Sdk"]:
+    elif "Sdk" in myroot.attrib and "Microsoft.NET.Sdk" in myroot.attrib["Sdk"]:
         version_property = [x for x in myroot[0] if x.tag == "Version"][-1]
         version_property.text = version
         mytree.write(file_path)