plugins: Remove requirements.txt for python plugins

Removing requirements.txt from clnrest and wss-proxy plugins due to their ever changing dependencies. We will only be dependent on pyproject.toml for more stable results.

Reference: #7416 (comment)

Changelog-None.

Dockerfile

@@ -222,17 +222,24 @@ RUN apt-get update -qq && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
 
+RUN curl -sSL https://install.python-poetry.org | python3 -
 RUN update-alternatives --install /usr/bin/python python /usr/bin/python3.9 1
-ENV PATH=$PATH:/root/.cargo/bin/
-RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-RUN rustup toolchain install stable --component rustfmt --allow-downgrade
 
-WORKDIR /opt/lightningd
-COPY plugins/clnrest/requirements.txt plugins/clnrest/requirements.txt
-COPY plugins/wss-proxy/requirements.txt plugins/wss-proxy/requirements.txt
 ENV PYTHON_VERSION=3
-RUN pip3 install -r plugins/clnrest/requirements.txt && \
-    pip3 install -r plugins/wss-proxy/requirements.txt && \
+WORKDIR /opt/lightningd
+
+COPY plugins/clnrest/pyproject.toml plugins/clnrest/pyproject.toml
+COPY plugins/wss-proxy/pyproject.toml plugins/wss-proxy/pyproject.toml
+
+RUN cd plugins/clnrest && \
+    /root/.local/bin/poetry export -o requirements.txt --without-hashes && \
+    pip3 install -r requirements.txt && \
+    cd /opt/lightningd
+
+RUN cd plugins/wss-proxy && \
+    /root/.local/bin/poetry export -o requirements.txt --without-hashes && \
+    pip3 install -r requirements.txt && \
+    cd /opt/lightningd && \
     pip3 cache purge
 
 FROM ${BASE_DISTRO} as final

doc/developers-guide/app-development/rest.md

@@ -36,7 +36,7 @@ An online demo for the REST interface is available at [REST API REFERENCE](ref:g
 ## Installation
 
 The plugin is built-in with Core Lightning but its python dependencies are not, and must be installed separately.
-Install required packages with `pip install -r plugins/clnrest/requirements.txt`.
+Detailed installation instructions can be found [here](https://docs.corelightning.org/docs/installation#clnrest).
 
 Note: if you have the older c-lightning-REST plugin, you can configure Core Lightning with `disable-plugin=clnrest.py`
 option to avoid confusion with this one. You can also run both plugins simultaneously till all your applications

doc/getting-started/getting-started/installation.md

@@ -127,7 +127,6 @@ To build cln to just install a tagged or master version you can use the followin
 ```shell
 pip3 install --upgrade pip
 pip3 install mako
-pip3 install -r plugins/clnrest/requirements.txt
 pip3 install grpcio-tools
 ./configure
 make
@@ -588,7 +587,9 @@ apk add libgcc libsodium sqlite-libs zlib
 
 ## Python plugins
 
-You will need some Python packages if you want to use python plugins. Unfortunately there are some Python packages which are not packaged in Ubuntu, and so you will need to force installation of these (I recommend --user which will install them in your own .local directory, so at least you won't run the risk of breaking Python globally!).
+Python plugins will be installed with the `poetry install` step mentioned above fron development setup. 
+
+Other users will need some Python packages if python plugins are used. Unfortunately there are some Python packages which are not packaged in Ubuntu, and so force installation will be needed (Flag `--user` is recommended which will install them in user's own .local directory, so at least the risk of breaking Python globally can be avoided!).
 
 ### clnrest
 
@@ -601,7 +602,7 @@ pip3 install --user flask-cors flask-restx pyln-client flask-socketio gevent gev
 
 ### wss-proxy
 
-For wss-proxy, you need to install below libraries:
+Below libraries are required for wss-proxy:
 
 ```
 pip3 install --user pyln-client websockets