lightningd: removing bionic and python 3.7 support

Changelog-Removed: support for python v<=3.7 & Ubuntu bionic has been
removed.

clnrest's flask & gevent libraries require Python v>=3.8.

contrib/reprobuild/Dockerfile.bionic

@@ -1,69 +0,0 @@
-FROM bionic
-
-ENV TZ=UTC
-RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
-ENV RUST_PROFILE=release
-ENV PATH=/root/.cargo/bin:/root/.pyenv/shims:/root/.pyenv/bin:$PATH
-ENV PROTOC_VERSION=22.0
-
-RUN sed -i '/updates/d' /etc/apt/sources.list && \
-    sed -i '/security/d' /etc/apt/sources.list
-
-RUN apt-get update \
-    && apt-get install -y --no-install-recommends \
-      ca-certificates \
-      sudo \
-      build-essential \
-      libsodium23 \
-      libpq-dev \
-      git \
-      file \
-      autoconf \
-      debianutils \
-      gettext \
-      zip \
-      unzip \
-      wget
-
-# Need to fetch a python version that is >= 3.7 since that's the
-# lowest version supported by pyln. This is just temporary until we
-# drop support for ubuntu 18.04
-RUN git clone https://github.com/pyenv/pyenv.git /root/.pyenv \
-    && apt-get install -y --no-install-recommends \
-      libbz2-dev \
-      libffi-dev \
-      libreadline-dev \
-      libsqlite3-dev \
-      libssl-dev \
-      zlib1g-dev \
-    && pyenv install 3.7.0 \
-    && pyenv global 3.7.0
-
-RUN wget https://bootstrap.pypa.io/get-pip.py -O /tmp/get-pip.py && python3 /tmp/get-pip.py \
-	&& rm /tmp/get-pip.py \
-	&& pip install poetry
-
-RUN wget https://sh.rustup.rs -O rustup-install.sh && \
-    bash rustup-install.sh --default-toolchain none --quiet -y && \
-    rm rustup-install.sh && \
-    /root/.cargo/bin/rustup install 1.65
-
-# Download protoc manually, it is in the update repos which we
-# disabled above, so `apt-get` can't find it anymore.
-RUN cd /tmp/ && \
-    wget https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-linux-x86_64.zip && \
-    unzip protoc-${PROTOC_VERSION}-linux-x86_64.zip && \
-    mv bin/protoc /usr/local/bin && \
-    rm -rf include bin protoc-${PROTOC_VERSION}-linux-x86_64.zip
-
-RUN mkdir /build
-WORKDIR /build
-
-CMD poetry export -o requirements.txt --without-hashes \
-    && pip install -r requirements.txt\
-    && mkdir -p /repro \
-    && cd /repro \
-    && unzip /build/release/*.zip \
-    && cd clightning* \
-    && tools/repro-build.sh \
-    && cp *.xz /build/release/

doc/getting-started/advanced-setup/repro.md

@@ -38,9 +38,6 @@ the non-updated repos).
 
 The following table lists the codenames of distributions that we currently support:
 
-- Ubuntu 18.06:
-  - Distribution Version: 18.04
-  - Codename: bionic
 - Ubuntu 20.04:
   - Distribution Version: 20.04
   - Codename: focal
@@ -51,7 +48,7 @@ The following table lists the codenames of distributions that we currently suppo
 Depending on your host OS release you might not have `debootstrap` manifests for versions newer than your host OS. Due to this we run the `debootstrap` commands in a container of the latest version itself:
 
 ```shell
-for v in bionic focal jammy; do
+for v in focal jammy; do
   echo "Building base image for $v"
   sudo docker run --rm -v $(pwd):/build ubuntu:22.04 \
 	bash -c "apt-get update && apt-get install -y debootstrap && debootstrap $v /build/$v"
@@ -62,16 +59,16 @@ done
 Verify that the image corresponds to our expectation and is runnable:
 
 ```shell
-sudo docker run bionic cat /etc/lsb-release
+sudo docker run jammy cat /etc/lsb-release
 ```
 
-Which should result in the following output for `bionic`:
+Which should result in the following output for `jammy`:
 
 ```shell
 DISTRIB_ID=Ubuntu
-DISTRIB_RELEASE=18.04
+DISTRIB_RELEASE=22.04
-DISTRIB_CODENAME=bionic
+DISTRIB_CODENAME=jammy
-DISTRIB_DESCRIPTION="Ubuntu 18.04 LTS"
+DISTRIB_DESCRIPTION="Ubuntu 22.04 LTS"
 ```
 
 ## Builder image setup
@@ -83,7 +80,6 @@ For this purpose we have a number of Dockerfiles in the [`contrib/reprobuild`](h
 We can then build the builder image by calling `docker build` and passing it the `Dockerfile`:
 
 ```shell
-sudo docker build -t cl-repro-bionic - < contrib/reprobuild/Dockerfile.bionic
 sudo docker build -t cl-repro-focal - < contrib/reprobuild/Dockerfile.focal
 sudo docker build -t cl-repro-jammy - < contrib/reprobuild/Dockerfile.jammy
 ```
@@ -99,7 +95,6 @@ Finally, after this rather lengthy setup we can perform the actual build.  At th
 We'll need the release directory available for this, so create it now if it doesn't exist:`mkdir release`, then we can simply execute the following command inside the git repository (remember to checkout the tag you are trying to build):
 
 ```bash
-sudo docker run --rm -v $(pwd):/repo -ti cl-repro-bionic
 sudo docker run --rm -v $(pwd):/repo -ti cl-repro-focal
 sudo docker run --rm -v $(pwd):/repo -ti cl-repro-jammy
 ```

tools/build-release.sh

@@ -150,7 +150,7 @@ for target in $TARGETS; do
         echo "Fedora Image Built"
         ;;
     Ubuntu)
-		for d in bionic focal jammy; do
+		for d in focal jammy; do
             # Capitalize the first letter of distro
             D=$(echo "$d" | awk '{print toupper(substr($0,1,1))substr($0,2)}')
 			echo "Building Ubuntu $D Image"
@@ -197,7 +197,7 @@ if [ -z "${TARGETS##* deb *}" ]; then
     BLDDIR="${TMPDIR}/clightning-${VERSION}"
     ARCH="$(dpkg-architecture -q DEB_BUILD_ARCH)"
 
-    for SUITE in bionic focal hirsute xenial hirsute impish; do
+    for SUITE in focal hirsute xenial hirsute impish; do
 
 	mkdir -p "${BLDDIR}"
 	echo "Building ${BARE_VERSION} in ${TMPDIR}"