fix: drop all python embedding code for docker and doc

README.md

@@ -229,4 +229,3 @@ Special thanks to all the contributors who have propelled GreptimeDB forward. Fo
 - GreptimeDB's query engine is powered by [Apache Arrow DataFusion™](https://arrow.apache.org/datafusion/).
 - [Apache OpenDAL™](https://opendal.apache.org) gives GreptimeDB a very general and elegant data access abstraction layer.
 - GreptimeDB's meta service is based on [etcd](https://etcd.io/).
-- GreptimeDB uses [RustPython](https://github.com/RustPython/RustPython) for experimental embedded python scripting.

docker/buildx/centos/Dockerfile

@@ -22,7 +22,7 @@ RUN unzip protoc-3.15.8-linux-x86_64.zip -d /usr/local/
 # Install Rust
 SHELL ["/bin/bash", "-c"]
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --no-modify-path --default-toolchain none -y
-ENV PATH /opt/rh/rh-python38/root/usr/bin:/usr/local/bin:/root/.cargo/bin/:$PATH
+ENV PATH /usr/local/bin:/root/.cargo/bin/:$PATH
 
 # Build the project in release mode.
 RUN --mount=target=.,rw \

docker/dev-builder/android/Dockerfile

@@ -13,12 +13,7 @@ RUN apt-get update && apt-get install -y \
     curl \
     git \
     build-essential \
-    pkg-config \
-    python3 \
-    python3-dev \
-    python3-pip \
-    && pip3 install --upgrade pip \
-    && pip3 install pyarrow
+    pkg-config
 
 # Trust workdir
 RUN git config --global --add safe.directory /greptimedb

docker/dev-builder/centos/Dockerfile

@@ -12,8 +12,6 @@ RUN yum install -y epel-release  \
     openssl \
     openssl-devel  \
     centos-release-scl  \
-    rh-python38  \
-    rh-python38-python-devel \
     which
 
 # Install protoc
@@ -23,7 +21,7 @@ RUN unzip protoc-3.15.8-linux-x86_64.zip -d /usr/local/
 # Install Rust
 SHELL ["/bin/bash", "-c"]
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --no-modify-path --default-toolchain none -y
-ENV PATH /opt/rh/rh-python38/root/usr/bin:/usr/local/bin:/root/.cargo/bin/:$PATH
+ENV PATH /usr/local/bin:/root/.cargo/bin/:$PATH
 
 # Install Rust toolchains.
 ARG RUST_TOOLCHAIN

docker/dev-builder/ubuntu/Dockerfile

@@ -6,11 +6,8 @@ ARG DOCKER_BUILD_ROOT=.
 ENV LANG en_US.utf8
 WORKDIR /greptimedb
 
-# Add PPA for Python 3.10.
 RUN apt-get update && \
-    DEBIAN_FRONTEND=noninteractive apt-get install -y software-properties-common && \
-    add-apt-repository ppa:deadsnakes/ppa -y
-
+    DEBIAN_FRONTEND=noninteractive apt-get install -y software-properties-common
 # Install dependencies.
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     libssl-dev \
@@ -20,9 +17,7 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
     ca-certificates \
     git \
     build-essential \
-    pkg-config \
-    python3.10 \
-    python3.10-dev
+    pkg-config
 
 ARG TARGETPLATFORM
 RUN echo "target platform: $TARGETPLATFORM"
@@ -38,12 +33,6 @@ fi
 RUN mv protoc3/bin/* /usr/local/bin/
 RUN mv protoc3/include/* /usr/local/include/
 
-# Remove Python 3.8 and install pip.
-RUN apt-get -y purge python3.8 && \
-    apt-get -y autoremove && \
-    ln -s /usr/bin/python3.10 /usr/bin/python3 && \
-    curl -sS https://bootstrap.pypa.io/get-pip.py | python3.10
-
 # Silence all `safe.directory` warnings, to avoid the "detect dubious repository" error when building with submodules.
 # Disabling the safe directory check here won't pose extra security issues, because in our usage for this dev build
 # image, we use it solely on our own environment (that github action's VM, or ECS created dynamically by ourselves),
@@ -56,10 +45,6 @@ RUN apt-get -y purge python3.8 && \
 # it can be a different user that have prepared the submodules.
 RUN git config --global --add safe.directory '*'
 
-# Install Python dependencies.
-COPY $DOCKER_BUILD_ROOT/docker/python/requirements.txt /etc/greptime/requirements.txt
-RUN python3 -m pip install -r /etc/greptime/requirements.txt
-
 # Install Rust.
 SHELL ["/bin/bash", "-c"]
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --no-modify-path --default-toolchain none -y