fix: remove npm/claude-code from ubuntu:22.04 Dockerfiles to prevent dpkg conflict

Harbor installs Node.js 22.x via NodeSource and Claude Code via its own
install script. Pre-installing npm from Ubuntu 22.04 repos (Node.js 12.x)
causes a dpkg conflict when NodeSource tries to upgrade nodejs, breaking
Claude Code setup (return code 100).

Affected: 3 nlqa-arch + 6 investigation tasks.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: LoCoBench Bot

benchmarks/ccb_investigation/inv-deep-001/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Envoy at the target commit (before router header mutation fix)
 # PR #40856 (commit 25f893b) fixes the bug where response_headers_to_add
 # is processed multiple times for local responses due to double

benchmarks/ccb_investigation/inv-deep-002/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Istio at the pre-fix commit for the DestinationRule dependency bug.
 # PR #38088 (merge commit 9fcfe231) fixes the bug where merged DestinationRules
 # lose the metadata of contributing DRs, causing xDS pushes to be silently

benchmarks/ccb_investigation/inv-deep-003/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Terraform at the pre-fix commit for the sensitive marks bug.
 # PR #34567 (merge commit c4a2f74054a9) fixes the bug where provider-schema-
 # defined sensitive attributes are not applied to values returned by

benchmarks/ccb_investigation/inv-interaction-001/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Kubernetes at the target commit (before the NoExecute taint delay fix)
 # PR #120816 (commit f718096) fixes the bug where processTaintBaseEviction()
 # receives observedReadyCondition (stale) instead of currentReadyCondition,

benchmarks/ccb_investigation/inv-interaction-002/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Cilium at the target commit (before the identity/SelectorCache race fix)
 # PR #42049 (commit 696017a) fixes the race condition where identity allocation
 # completes and triggers endpoint regeneration before the SelectorCache has

benchmarks/ccb_investigation/inv-interaction-003/environment/Dockerfile

@@ -7,13 +7,9 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     openjdk-11-jdk \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Kafka at the target commit (before the cooperative rebalance offset commit fix)
 # PR #12349 (commit d8541b20a106f22736947e0c2f293833f3c3873b) fixes KAFKA-14024, where
 # the consumer's onJoinPrepare callback keeps initiating new async offset commits

benchmarks/ccb_nlqa/nlqa-arch-001/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Envoy at v1.34.0 release (pinned SHA)
 RUN git clone --filter=blob:none --no-checkout https://github.com/envoyproxy/envoy.git . && \
     git checkout d7809ba2b07fd869d49bfb122b27f6a7977b4d94 && \

benchmarks/ccb_nlqa/nlqa-arch-002/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Istio at v1.24.3 release (pinned SHA)
 RUN git clone --filter=blob:none --no-checkout https://github.com/istio/istio.git . && \
     git checkout 44d0e58e49d0dc89e27fc4f8679c68132d46b887 && \

benchmarks/ccb_nlqa/nlqa-arch-003/environment/Dockerfile

@@ -7,12 +7,8 @@ RUN apt-get update && apt-get install -y \
     git \
     curl \
     python3 \
-    npm \
     && rm -rf /var/lib/apt/lists/*
 
-# Install Claude Code CLI
-RUN npm install -g @anthropic-ai/claude-code
-
 # Clone Terraform at v1.10.0 release (pinned SHA)
 RUN git clone --filter=blob:none --no-checkout https://github.com/hashicorp/terraform.git . && \
     git checkout 24236f4f0bd10ada71d70868abe15f9d88099747 && \