refactor: move agent Dockerfiles into their contrib directories

Dockerfile.claude and Dockerfile.codex move from the repo root into
bot_bottle/contrib/claude/Dockerfile and bot_bottle/contrib/codex/Dockerfile
respectively, so all per-provider assets live alongside the provider code.

Closes #215

bot_bottle/contrib/claude/Dockerfile

@@ -0,0 +1,72 @@
+# bot-bottle container image.
+#
+# Goal: a small, cache-friendly base that ships claude-code (the
+# `@anthropic-ai/claude-code` npm package, CLI name `claude`) ready to run
+# interactively. The container is ephemeral; per PRD 0001 v1 the host
+# filesystem is not mounted in.
+#
+# Layer ordering is deliberate: the npm install lives in its own layer so
+# changes to the rest of the repo (or to the CMD) don't bust it.
+
+# Current Node LTS; slim variant keeps the image small while still
+# providing apt-get for any future additions.
+FROM node:22-slim
+
+# Install runtime system deps. claude-code shells out to git for several
+# features (status checks, commits, PR creation) — without git in the
+# image, those features fail in surprising ways once the user does any
+# real work. ca-certificates is already in the slim base; listed for
+# clarity in case the base ever drops it. curl is here so any
+# HTTPS_PROXY-aware tool (curl itself, plus anything that shells out
+# to it) works against egress's bumped TLS without the agent needing
+# local DNS.
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends git ca-certificates curl \
+  && rm -rf /var/lib/apt/lists/*
+
+# App-specific deps. Python isn't required by claude-code itself
+# (claude-code is a Node CLI), but is convenient for the agent to
+# shell out to for ad-hoc scripts. Kept on its own layer so it can
+# be moved to a downstream image if the base ever needs to shrink.
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends python3 python3-pip python3-venv \
+  && rm -rf /var/lib/apt/lists/*
+
+# Install claude-code globally. Pinned to the version verified in the v1
+# build (`claude --version` returns 2.1.126). Bump deliberately when
+# rolling forward; an unpinned install would mean rebuilds silently pick
+# up new behavior.
+RUN npm install -g --no-fund --no-audit @anthropic-ai/claude-code@2.1.126 \
+  && npm cache clean --force
+
+# Run as a non-root user. The node image already provides a `node` user
+# (uid 1000) with a home directory, which is where claude-code will write
+# its session state.
+USER node
+WORKDIR /home/node
+
+# Pre-create the skills directory so PRD 0002's host->container skill
+# copier (bot_bottle/skills.py) drops files into a path owned by the
+# `node` user. `skills_copy_into` also `mkdir -p`s defensively, but
+# baking it into the image avoids a permission-confusion footgun if a
+# future change to the launcher copies in as a different user.
+RUN mkdir -p /home/node/.claude/skills
+
+# Heredoc delimiter is unquoted so $HOME expands; no other `$` appears
+# in the body, so this is safe under dash (Docker's default RUN shell).
+RUN cat > "$HOME/.claude.json" <<JSON
+{
+  "hasCompletedOnboarding": true,
+  "theme": "dark",
+  "bypassPermissionsModeAccepted": true,
+  "projects": {
+    "$HOME": { "hasTrustDialogAccepted": true }
+  }
+}
+JSON
+
+# Default to an interactive claude session. In the v1 launcher,
+# `bot_bottle/cli/start.py` runs the container detached and uses `docker exec`
+# to attach a TTY, but this CMD makes `docker run -it bot-bottle-claude` also
+# do something useful for ad-hoc debugging.
+CMD ["claude"]

bot_bottle/contrib/claude/agent_provider.py

@@ -28,8 +28,6 @@ if TYPE_CHECKING:
     from ...backend import Bottle, BottlePlan
 
 
-_REPO_ROOT = Path(__file__).resolve().parents[3]
-
 _SUPERVISE_MCP_NAME = "supervise"
 
 
@@ -44,7 +42,7 @@ _RUNTIME = AgentProviderRuntime(
     template="claude",
     command="claude",
     image="bot-bottle-claude:latest",
-    dockerfile=str(_REPO_ROOT / "Dockerfile.claude"),
+    dockerfile=str(Path(__file__).resolve().parent / "Dockerfile"),
     prompt_mode="append_file",
     bypass_args=("--dangerously-skip-permissions",),
     resume_args=("--continue",),

bot_bottle/contrib/codex/Dockerfile

@@ -0,0 +1,28 @@
+# bot-bottle Codex provider image.
+#
+# Mirrors the default Claude image shape: Node LTS, git/network tooling,
+# non-root node user, and the provider CLI installed globally.
+
+FROM node:22-slim
+
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends git ca-certificates curl \
+  && rm -rf /var/lib/apt/lists/*
+
+# App-specific deps. Python isn't required by codex itself
+# (codex is a Node CLI), but is convenient for the agent to shell
+# out to for ad-hoc scripts. Kept on its own layer so it can be
+# moved to a downstream image if the base ever needs to shrink.
+RUN apt-get update \
+  && apt-get install -y --no-install-recommends python3 python3-pip python3-venv \
+  && rm -rf /var/lib/apt/lists/*
+
+RUN npm install -g --no-fund --no-audit @openai/codex@0.136.0 \
+  && npm cache clean --force
+
+USER node
+WORKDIR /home/node
+
+RUN mkdir -p /home/node/.codex
+
+CMD ["codex"]

bot_bottle/contrib/codex/agent_provider.py

@@ -32,8 +32,6 @@ if TYPE_CHECKING:
     from ...backend import Bottle, BottlePlan
 
 
-_REPO_ROOT = Path(__file__).resolve().parents[3]
-
 _SUPERVISE_MCP_NAME = "supervise"
 
 
@@ -52,7 +50,7 @@ _RUNTIME = AgentProviderRuntime(
     template="codex",
     command="codex",
     image="bot-bottle-codex:latest",
-    dockerfile=str(_REPO_ROOT / "Dockerfile.codex"),
+    dockerfile=str(Path(__file__).resolve().parent / "Dockerfile"),
     prompt_mode="read_prompt_file",
     bypass_args=("--dangerously-bypass-approvals-and-sandbox",),
     resume_args=("resume", "--last"),