Add dockerfile

sdks/python/tfx_bsl_testing/Dockerfile

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+ARG BASE=tensorflow/tensorflow:2.10.0-gpu
+FROM $BASE
+
+# Check that the chosen base image provides the expected version of Python interpreter.
+ARG PY_VERSION=3.8
+RUN [[ $PY_VERSION == `python -c 'import sys; print("%s.%s" % sys.version_info[0:2])'` ]] \
+   || { echo "Could not find Python interpreter or Python version is different from ${PY_VERSION}"; exit 1; }
+
+RUN apt-get update -y && apt-get install git -y \
+    && apt install libcairo2-dev -y \
+    && pip install --user git+https://github.com/pygobject/pycairo.git
+
+RUN pip install --upgrade pip setuptools \
+    && pip install scipy \
+    && pip install --no-cache-dir apache-beam[gcp]==2.42.0
+RUN pip install pillow
+    # Verify that there are no conflicting dependencies.
+# Copy the Apache Beam worker dependencies from the Beam Python 3.8 SDK image.
+COPY --from=apache/beam_python3.8_sdk:2.42.0 /opt/apache/beam /opt/apache/beam
+
+# Apache Beam worker expects pip at /usr/local/bin/pip by default.
+# Some images have pip in a different location. If necessary, make a symlink.
+# This can be omitted in Beam 2.30.0 and later versions.
+RUN [[ `which pip` == "/usr/local/bin/pip" ]] || ln -s `which pip` /usr/local/bin/pip
+
+# Set the entrypoint to Apache Beam SDK worker launcher.
+ENTRYPOINT [ "/opt/apache/beam/boot" ]