[CI] Reduce set of build dependencies

Be more intentional about what dependencies we use. This should make CI
run a bit faster.

.devcontainer/Dockerfile

@@ -4,9 +4,9 @@ FROM mcr.microsoft.com/devcontainers/base:jammy
 # will also install lldb and clangd alongside dependencies.
 ARG LLVM_VERSION=15
 RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
-    && apt-get -y install software-properties-common python3 python3-distutils tclsh \
+    && apt-get -y install --no-install-recommends --no-install-suggests software-properties-common python3 python3-distutils tclsh \
     && curl -fSsL -o /tmp/llvm.sh https://apt.llvm.org/llvm.sh && chmod +x /tmp/llvm.sh && bash /tmp/llvm.sh ${LLVM_VERSION} \
-    && apt-get -y install --no-install-recommends libunwind-${LLVM_VERSION} libc++abi1-${LLVM_VERSION} libc++1-${LLVM_VERSION} libc++-${LLVM_VERSION}-dev libclang-rt-${LLVM_VERSION}-dev -o DPkg::options::="--force-overwrite"
+    && apt-get -y install --no-install-recommends --no-install-suggests libc++abi-${LLVM_VERSION}-dev libc++-${LLVM_VERSION}-dev -o DPkg::options::="--force-overwrite"
 ENV PATH /usr/lib/llvm-${LLVM_VERSION}/bin:$PATH
 
 # Install NodeJS

.github/workflows/release.yml

@@ -84,11 +84,13 @@ jobs:
       - name: Setup Linux
         if: runner.os == 'Linux'
         run: |
+          sudo echo "APT::Install-Recommends \"0\";" >> /etc/apt/apt.conf
+          sudo echo "APT::Install-Suggests \"0\";" >> /etc/apt/apt.conf
           export DEBIAN_FRONTEND=noninteractive
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
           sudo ./llvm.sh 15
-          sudo apt-get install -y libunwind-15 libc++abi1-15 libc++1-15 libc++-15-dev
+          sudo apt-get install -y libc++-15-dev
           echo "build:linux --action_env=CC=/usr/lib/llvm-15/bin/clang --action_env=CXX=/usr/lib/llvm-15/bin/clang++" >> .bazelrc
           echo "build:linux --host_action_env=CC=/usr/lib/llvm-15/bin/clang --host_action_env=CXX=/usr/lib/llvm-15/bin/clang++" >> .bazelrc
       - name: Setup macOS

.github/workflows/test.yml

@@ -62,22 +62,23 @@ jobs:
           # resulting in a snowballing cache size and cache download/upload times.
       - name: Setup Linux
         if: matrix.os.name == 'linux'
-        # Install dependencies, including clang via through LLVM APT repository. Note that this
+        # Install dependencies, including clang through the LLVM APT repository. Note that this
         # will also install lldb and clangd alongside dependencies, which can be removed with
         # `sudo apt-get remove -y lldb-15 clangd-15; sudo apt-get autoremove -y` if space is
         # limited.
-        # libunwind, libc++abi1 and libc++1 should be automatically installed as dependencies of
-        # libc++, but this appears to cause errors so they are also being explicitly installed.
+        # libunwind and libc++abi will be automatically installed as dependencies of libc++-dev,
+        # using Install-Recommends false helps us keep the install overhead low.
         # Since the GitHub runner image comes with a number of preinstalled packages, we don't need
         # to use APT much otherwise.
         # TODO(cleanup): Upgrade this to LLVM 16 as soon as it is available on the latest Ubuntu
         # LTS release. Debian includes LLVM 16 since the Bookworm 12.4 point release.
         run: |
           export DEBIAN_FRONTEND=noninteractive
           wget https://apt.llvm.org/llvm.sh
+          sed -i '/apt-get install/d' llvm.sh
           chmod +x llvm.sh
           sudo ./llvm.sh 15
-          sudo apt-get install -y libunwind-15 libc++abi1-15 libc++1-15 libc++-15-dev libclang-rt-15-dev
+          sudo apt-get install -y --no-install-recommends clang-15 lld-15 libunwind-15 libc++abi1-15 libc++1-15 libc++-15-dev libclang-rt-15-dev
           echo "build:linux --action_env=CC=/usr/lib/llvm-15/bin/clang --action_env=CXX=/usr/lib/llvm-15/bin/clang++" >> .bazelrc
           echo "build:linux --host_action_env=CC=/usr/lib/llvm-15/bin/clang --host_action_env=CXX=/usr/lib/llvm-15/bin/clang++" >> .bazelrc
           sed -i -e "s%llvm-symbolizer%/usr/lib/llvm-15/bin/llvm-symbolizer%" .bazelrc

Dockerfile.release

@@ -5,12 +5,15 @@ FROM node:bullseye AS builder
 
 WORKDIR /workerd
 
+RUN echo "APT::Install-Recommends \"0\";" >> /etc/apt/apt.conf
+RUN echo "APT::Install-Suggests \"0\";" >> /etc/apt/apt.conf
 RUN apt-get update
 RUN apt-get install -y curl build-essential git lsb-release wget software-properties-common gnupg
 
 RUN wget https://apt.llvm.org/llvm.sh
 RUN chmod +x llvm.sh
-RUN ./llvm.sh 15 all
+RUN ./llvm.sh 15
+RUN  apt-get install -y libc++-15-dev
 COPY . .
 
 RUN echo "build:linux --action_env=CC=/usr/lib/llvm-15/bin/clang --action_env=CXX=/usr/lib/llvm-15/bin/clang++" >> .bazelrc