sha256:f4ed0dec429b8cb19179c43cacf2650d3e398a12d7deee14616e07419cb963b5
Last pushed
1 day by adamhardwickdt
Type
Sandbox Kit
Manifest digest
sha256:f4ed0dec429b8cb19179c43cacf2650d3e398a12d7deee14616e07419cb963b5
schemaVersion: "3"
displayName: DigiTickets Claude sandbox (spike)
description: Claude Code from Docker's published kit, with the estate's PHP toolchain and .env deny policy layered on top.
sourceUrl: https://bitbucket.org/digitickets/claude-containers
version: 0.0.0-spike
licenses:
- SEE LICENSE IN https://github.com/anthropics/claude-code/blob/main/LICENSE.md
kind: workload
provides:
- [email protected]
- deb/[email protected]
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- deb/ca-certificates@20250419
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- deb/iputils-ping@20240905
- deb/[email protected]
- deb/less@668
- deb/[email protected]
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capabilities:
- group:
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[0]
type: com.docker.sandbox/sbx@1
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[0]
- group:
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[1]
type: com.docker.sandbox/network-policy@1
config:
runtime:
allow:
- api.anthropic.com:443
- platform.claude.com:443
- downloads.claude.ai:443
- claude.com:443
- mcp-proxy.anthropic.com:443
- bridge.claudeusercontent.com:443
- deb.debian.org:80
- dhi.io:80
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[1]
- group:
name: Anthropic access
description: Anthropic API access (API key or claude.ai OAuth)
optional: true
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[2]
type: com.docker.sandbox/credential@1
name: Anthropic access
config:
apiKey:
inject:
- domain: api.anthropic.com
format: '%s'
header: x-api-key
- domain: mcp-proxy.anthropic.com
format: '%s'
header: x-api-key
oauth:
credentialFile:
path: ~/.claude/.credentials.json
structure:
claudeAiOauth:
accessToken: '{{.AccessToken}}'
expiresAt: '{{.ExpiresAt}}'
refreshToken: '{{.RefreshToken}}'
scopes: '{{.Scopes}}'
primaryApiKey: '{{.PrimaryApiKey}}'
sentinels:
accessToken: sk-ant-oat01-proxy-managed
refreshToken: sk-ant-ort01-proxy-managed
tokenEndpoint:
host: platform.claude.com
path: /v1/oauth/token
phase: runtime
service: anthropic
description: Anthropic API access (API key or claude.ai OAuth)
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[2]
- group:
description: Drive claude sessions programmatically
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[3]
type: com.docker.sandbox/agent-sessions@1
config:
continue:
- --continue
list:
- python3
- /opt/claude-sessions/interactive-sessions.py
prompt:
- -p
- --
- '{{.Prompt}}'
resume:
- --resume
- '{{.SessionID}}'
description: Drive claude sessions programmatically
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[3]
- group:
description: Open claude's terminal UI on a chosen session
optional: true
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[4]
type: com.docker.sandbox/agent-interactive-sessions@1
config:
continue:
- --continue
prompt:
- --
- '{{.Prompt}}'
resume:
- --resume
- '{{.SessionID}}'
sessionPicker:
- --resume
description: Open claude's terminal UI on a chosen session
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[4]
- group:
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[5]
type: com.docker.sandbox/lifecycle@1
config:
install:
- command: |
set -e
ws="${WORKSPACE_DIR:-/}"
esc=$(printf '%s' "$ws" | sed 's/\\/\\\\/g; s/"/\\"/g; s/\t/\\t/g; s/\r/\\r/g')
projects="\"/\": { \"hasTrustDialogAccepted\": true }"
[ "$ws" = "/" ] || projects="$projects, \"$esc\": { \"hasTrustDialogAccepted\": true }"
printf '%s\n' "{
\"bypassPermissionsModeAccepted\": true,
\"hasCompletedOnboarding\": true,
\"hasSeenAutoDefaultNudge\": true,
\"projects\": { $projects }
}" > /home/agent/.claude.json
chown agent:agent /home/agent/.claude.json
description: Seed Claude bypass/trust flags (root; overwrites image-shipped file)
env:
- WORKSPACE_DIR
user: "0"
- command: mkdir -p /home/agent/.claude && chown agent:agent /home/agent/.claude
description: Ensure ~/.claude is agent-owned before settings seed
user: "0"
- command: |
set -e
HELPER=''
if [ "${SBX_CRED_ANTHROPIC_MODE:-none}" != none ]; then
HELPER=' "apiKeyHelper": "echo proxy-managed",
'
fi
# Model selection from the create-phase args. The args'
# patterns admit no quote or backslash, so the expanded
# value is safe inside the JSON string. effortLevel accepts
# low/medium/high/xhigh; max and auto persist only through
# CLAUDE_CODE_EFFORT_LEVEL (settings.json rejects them).
model=''
effort=''
MODEL=''
EFFORT=''
ENV_BLOCK=''
[ -z "$model" ] || MODEL=" \"model\": \"$model\",
"
case "$effort" in
'') ;;
max|auto)
ENV_BLOCK=" \"env\": { \"CLAUDE_CODE_EFFORT_LEVEL\": \"$effort\" },
"
;;
*)
EFFORT=" \"effortLevel\": \"$effort\",
"
;;
esac
# Lifecycle hooks for Narwhal (see /usr/local/bin/sbx-claude-hook):
# Stop and StopFailure report a finished turn, Notification the
# moments Claude waits on the user, UserPromptSubmit the prompt
# that names the conversation (Claude Code lists sessions by id
# only). The script never fails, never writes stdout and runs
# async, so a session without the desktop app sees no delay and
# no hook error.
HOOK='{ "type": "command", "command": "/usr/local/bin/sbx-claude-hook claude", "timeout": 10, "async": true }'
HOOKS=" \"hooks\": {
\"Stop\": [ { \"hooks\": [ $HOOK ] } ],
\"StopFailure\": [ { \"hooks\": [ $HOOK ] } ],
\"UserPromptSubmit\": [ { \"hooks\": [ $HOOK ] } ],
\"Notification\": [ { \"matcher\": \"permission_prompt|idle_prompt|elicitation_dialog|elicitation_url_dialog|agent_needs_input\", \"hooks\": [ $HOOK ] } ]
},
"
# The statusLine command is the only place Claude Code exposes
# the live session (model, context window, cost, lines changed);
# sbx-agent-hook forwards it to Narwhal's status bar and prints
# nothing, so no status line is drawn in the terminal. A mixin that
# sets its own statusLine (e.g. claude-sbx-statusline) replaces
# this one and the app's session view goes quiet for that sandbox.
STATUSLINE=" \"statusLine\": { \"type\": \"command\", \"command\": \"/usr/local/bin/sbx-claude-hook claude-status\" },
"
printf '%s' "{
\"themeId\": 1,
\"alwaysThinkingEnabled\": true,
${HELPER}${MODEL}${EFFORT}${ENV_BLOCK}${HOOKS}${STATUSLINE} \"permissions\": { \"defaultMode\": \"bypassPermissions\" },
\"bypassPermissionsModeAccepted\": true,
\"skipDangerousModePermissionPrompt\": true
}
" > /home/agent/.claude/settings.json
description: Seed Claude settings.json from the surfaced auth mode
env:
- SBX_CRED_ANTHROPIC_MODE
user: agent
- command: |
set -e
[ -n "$MCP_GATEWAY_URL" ] || exit 0
export PATH="$HOME/.local/bin:$HOME/.claude/local:$PATH"
claude mcp add mcp-gateway "$MCP_GATEWAY_URL" \
--transport http \
--scope user \
--header "Authorization: Bearer $MCP_SENTINEL_TOKEN_NAME" || true
description: Register the sandbox MCP gateway (install-time, race-free)
env:
- MCP_GATEWAY_URL
- MCP_SENTINEL_TOKEN_NAME
user: agent
startup:
- background: true
command:
- sh
- -c
- command -v apt-get > /dev/null 2>&1 && (apt-get update -qq -y > /dev/null 2>&1 || true)
description: Update apt package cache in background
user: "0"
- command: |
set -e
[ -n "$MCP_GATEWAY_URL" ] || exit 0
export PATH="$HOME/.local/bin:$HOME/.claude/local:$PATH"
claude mcp add mcp-gateway "$MCP_GATEWAY_URL" \
--transport http \
--scope user \
--header "Authorization: Bearer $MCP_SENTINEL_TOKEN_NAME" || true
description: Register the sandbox MCP gateway (startup fallback)
env:
- MCP_GATEWAY_URL
- MCP_SENTINEL_TOKEN_NAME
user: agent
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[5]
- group:
optional: true
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[6]
type: com.docker.sandbox/agent-skills@1
config:
path: /home/agent/.claude/skills
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[6]
- group:
optional: true
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[7]
type: com.docker.sandbox/agent-context@1
config:
contentFile: /usr/share/sandbox/kit/claude-sandbox/context.md.parts/0.md
directory: /home/agent/.claude
filename: CLAUDE.md
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[7]
- group:
optional: true
capabilities:
- source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[8]
type: com.docker.sandbox/agent-context@2
config:
content: |
## Claude Code
Claude Code is installed at `~/.local/bin/claude` by Anthropic's native installer. Launch is
`claude --dangerously-skip-permissions`; the image entrypoint starts it. Run `claude` for an interactive session, or
`claude -p "<prompt>"` for a one-shot run.
Claude Code's permission prompts are turned off in `~/.claude/settings.json`
(`permissions.defaultMode = "bypassPermissions"`). That is deliberate: the container is the sandbox, and a prompt
nobody can answer just deadlocks a non-interactive session.
Authentication is proxy-mediated. Depending on what the host has bound, either the `apiKeyHelper` in
`~/.claude/settings.json` returns the literal string `proxy-managed` and the sandbox proxy substitutes the real
Anthropic API key on requests to `api.anthropic.com`, or `~/.claude/.credentials.json` holds claude.ai OAuth tokens
that are sentinels the proxy swaps at request time. Either way there is no real credential in this container. With
nothing bound, `claude` will ask you to `/login`.
Skills are read from `~/.claude/skills`, where the host's shared skills store mounts.
## Installing Packages
The image ships a small toolset: shell and CLI tools, git, gh, Docker, and Python 3.14 with pip and uv. Install
anything else with `sudo apt-get update && sudo apt-get install -y <package>`; `sudo` needs no password. Two apt
repositories are configured and reachable through the sandbox proxy: Debian trixie (`deb.debian.org`) and Docker
Hardened Images (`dhi.io/deb/debian/main`). The DHI repository carries versioned toolchains such as `golang-1.26`
and `nodejs-24`; Debian supplies the rest, for example `default-jdk-headless`. `apt-cache search <term>` lists what
is available. Building Python packages from source needs `build-essential` first.
## Environment Persistence
The `CLAUDE_ENV_FILE` environment variable is set to `/etc/sandbox-persistent.sh`.
According to [Claude Code Documentation](https://code.claude.com/docs/en/settings#bash-tool-behavior):
> **CLAUDE_ENV_FILE**
>
> If set, this file will be sourced before each Bash command execution. This allows environment variables to persist
> across multiple Bash tool invocations.
This means `/etc/sandbox-persistent.sh` is sourced before every Bash tool call you make. Any `export` statements you
append to this file will be available in all subsequent commands without needing a login shell.
### Shell Completions Must NOT Be in CLAUDE_ENV_FILE
**NEVER add shell completion scripts to `/etc/sandbox-persistent.sh`.**
`CLAUDE_ENV_FILE` is sourced **before every single bash command execution**, not just during shell initialization.
Completion scripts rely on special variables (`COMP_WORDS`, `COMP_CWORD`, `COMPREPLY`) that only exist during
tab-completion contexts.
#### WRONG - Will Break Bash
```bash
# DO NOT ADD THESE TO /etc/sandbox-persistent.sh
[ -s "$NVM_DIR/bash_completion" ] && \. "$NVM_DIR/bash_completion"
[[ -s "$SDKMAN_DIR/etc/bash_completion.sh" ]] && source "$SDKMAN_DIR/etc/bash_completion.sh"
```
#### CORRECT - Only Load Core Functionality
```bash
# ONLY add the main initialization scripts
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
export SDKMAN_DIR="$HOME/.sdkman"
[[ -s "$SDKMAN_DIR/bin/sdkman-init.sh" ]] && source "$SDKMAN_DIR/bin/sdkman-init.sh"
```
#### Symptoms of Broken Shell
When completion scripts are incorrectly added:
- All bash commands return no output (silent failure)
- `echo`, `pwd`, and other basic commands produce no results
- The bash tool becomes completely unusable
#### Solution
If you accidentally added completion scripts and broke the shell:
1. Remove the completion line(s) from `/etc/sandbox-persistent.sh`
1. Exit and restart the Claude Code session
1. Verify with `echo "test"` that bash works again
directory: /home/agent/.claude
filename: CLAUDE.md
declarationBlocks:
- "1:0"
source:
kit: docker.io/sbx/claude:2.1.318
path: capabilities[8]
- group:
capabilities:
- source:
kit: the set descriptor
path: capabilities[0]
type: com.docker.sandbox/network-policy@1
config:
runtime:
allow:
- packagist.org:443
- repo.packagist.org:443
- getcomposer.org:443
- registry.npmjs.org:443
- registry.yarnpkg.com:443
- nodejs.org:443
- codeload.github.com:443
- objects.githubusercontent.com:443
declarationBlocks:
- "2:0"
source:
kit: the set descriptor
path: capabilities[0]
kits:
- ref: docker.io/sbx/claude:2.1.318
digest: sha256:929dfc4822ac9371198d384e5642477fdf55d1b3ea2a0a5f17eda75215fe6922
- ref: docker.io/digiticketsgroup/claude-sandbox:spike-tools
digest: sha256:c0e5ca61ac813c61e68cf4c4666bce1d692c4327c954485e26f96cdff357e310