Add nightly builds (#1013)

Partially fixes #884.
Adds:
- Docker image for CI on Linux
- Nightly builds without cache and releases
- Nightly clang-tidy checks
- Fix typos in .clang-tidy

docker/ci/dockerfile

@@ -0,0 +1,66 @@
+FROM ubuntu:focal
+ARG DEBIAN_FRONTEND=noninteractive
+ARG TARGETARCH
+
+USER root
+
+ENV GCC_VERSION=11 \
+    CCACHE_VERSION=4.8.3 \
+    LLVM_TOOLS_VERSION=17 \
+    GH_VERSION=2.40.0
+ 
+# Add repositories
+RUN apt-get -qq update \
+    && apt-get -qq install -y --no-install-recommends --no-install-suggests gnupg wget curl software-properties-common \
+    && add-apt-repository -y ppa:ubuntu-toolchain-r/test \
+    && wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | apt-key add - \
+    && apt-add-repository 'deb https://apt.kitware.com/ubuntu/ focal main' \
+    && echo "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-${LLVM_TOOLS_VERSION} main" >> /etc/apt/sources.list \
+    && wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
+
+# Install packages
+RUN apt update -qq \
+    && apt install -y --no-install-recommends --no-install-suggests cmake python3 python3-pip sudo git \
+    ninja-build make pkg-config libzstd-dev libzstd1 g++-${GCC_VERSION} jq \
+    clang-format-${LLVM_TOOLS_VERSION} clang-tidy-${LLVM_TOOLS_VERSION} clang-tools-${LLVM_TOOLS_VERSION} \
+    && update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-${GCC_VERSION} 100 \
+    && update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++-${GCC_VERSION} 100 \
+    && update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${GCC_VERSION} 100 \
+    && update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-${GCC_VERSION} 100 \
+    && update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-${GCC_VERSION} 100 \
+    && update-alternatives --install /usr/bin/gcov-dump gcov-dump /usr/bin/gcov-dump-${GCC_VERSION} 100 \
+    && update-alternatives --install /usr/bin/gcov-tool gcov-tool /usr/bin/gcov-tool-${GCC_VERSION} 100 \
+    && apt-get clean && apt remove -y software-properties-common \
+    && pip3 install  -q --upgrade --no-cache-dir pip \
+    && pip3 install  -q --no-cache-dir conan==1.62
+
+# Install ccache from source
+WORKDIR /tmp
+RUN wget "https://github.com/ccache/ccache/releases/download/v${CCACHE_VERSION}/ccache-${CCACHE_VERSION}.tar.gz" \
+    && tar xf "ccache-${CCACHE_VERSION}.tar.gz" \
+    && cd "ccache-${CCACHE_VERSION}" \
+    && mkdir build && cd build \
+    && cmake -GNinja -DCMAKE_BUILD_TYPE=Release .. \
+    && ninja && cp ./ccache /usr/bin/ccache
+
+# Install gh
+RUN wget https://github.com/cli/cli/releases/download/v${GH_VERSION}/gh_${GH_VERSION}_linux_${TARGETARCH}.tar.gz \
+    && tar xf gh_${GH_VERSION}_linux_${TARGETARCH}.tar.gz \
+    && mv gh_${GH_VERSION}_linux_${TARGETARCH}/bin/gh /usr/bin/gh
+
+# Clean up
+RUN rm -rf  /tmp/* /var/tmp/*
+
+# Add clio user
+RUN useradd -ms /bin/bash clio \
+    && echo 'clio ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+USER clio
+WORKDIR /home/clio
+
+# Setup environment
+ENV CCACHE_DIR=/home/clio/.ccache \
+    CONAN_USER_HOME=/home/clio/
+
+
+