[CI] Reduce set of build dependencies

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

.devcontainer/Dockerfile

@@ -4,7 +4,7 @@ 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 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"
 ENV PATH /usr/lib/llvm-${LLVM_VERSION}/bin:$PATH

.github/workflows/npm-types.yml

@@ -48,9 +48,10 @@ jobs:
         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
+            sudo apt-get install -y --no-install-recommends clang-15 lld-15 libunwind-15 libc++abi1-15 libc++1-15 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: build types

.github/workflows/release.yml

@@ -86,9 +86,10 @@ jobs:
         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
+          sudo apt-get install -y --no-install-recommends clang-15 lld-15 libunwind-15 libc++abi1-15 libc++1-15 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

@@ -62,10 +62,8 @@ 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
-        # 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.
+        # Install dependencies, including clang through the LLVM APT repository. We drop the
+        # install step so we can install just the packages we need.
         # 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.
         # Since the GitHub runner image comes with a number of preinstalled packages, we don't need
@@ -75,9 +73,10 @@ jobs:
         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 +5,16 @@ FROM node:bullseye AS builder
 
 WORKDIR /workerd
 
+# Replacing build-essential with dpkg-dev here, no need to install gcc.
 RUN apt-get update
-RUN apt-get install -y curl build-essential git lsb-release wget software-properties-common gnupg
+RUN apt-get install -y --no-install-recommends curl dpkg-dev git lsb-release wget software-properties-common gnupg tcl
 
 RUN wget https://apt.llvm.org/llvm.sh
+# Drop the install step here so we can install just the packages we need.
+RUN sed -i '/apt-get install/d' llvm.sh
 RUN chmod +x llvm.sh
-RUN ./llvm.sh 15 all
+RUN ./llvm.sh 15
+RUN 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
 COPY . .
 
 RUN echo "build:linux --action_env=CC=/usr/lib/llvm-15/bin/clang --action_env=CXX=/usr/lib/llvm-15/bin/clang++" >> .bazelrc