- Normalize string option values ("1.18") to {"version": "1.18"} so
shorthand syntax correctly sets the VERSION env var
- Add option_id_to_env_name() to convert option IDs like "node-version"
to NODE_VERSION per the dev container spec
- Emit _REMOTE_USER, _CONTAINER_USER, _REMOTE_USER_HOME, and
_CONTAINER_USER_HOME in feature install snippets, threading remoteUser
from devcontainer.json through resolve_features/generate_layer
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Extract read_feature_metadata(), extract_tgz(), and create_feature_dir()
helpers to eliminate copy-paste across fetch_feature_oci/local/https
- Move ensure_oras() out of per-feature calls into a once-per-resolve
check via oras_checked flag
- Simplify dockerfile::generate() to take &HashMap instead of
&Option<HashMap>, removing an unnecessary clone in the caller
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Create a local-features fixture with 3 local feature directories that
exercise all gap fixes through the full DevcontainerResolver pipeline:
- dependsOn auto-injection (base-utils not in features map, injected)
- feature containerEnv merge (3 features contribute env vars)
- feature lifecycle hooks (appended after devcontainer.json commands)
- local path feature references (all features use ./ paths)
- install ordering (dependsOn/installsAfter edges respected)
Also fix a concurrency bug: resolve_features now uses a unique temp
dir per invocation instead of a shared /tmp/devcontainer-features/
that caused parallel test corruption.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Document support for: feature dependsOn, feature containerEnv, feature
lifecycle hooks (onCreateCommand/postCreateCommand/postStartCommand),
subdirectory file discovery, and local path/HTTPS feature references.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Features can now be referenced as local paths (./feature or ../feature)
or HTTPS URLs (https://example.com/feature.tgz) in addition to OCI
registry references. A dispatch function routes fetches based on the
feature ID prefix. The oras CLI is only required for OCI refs.
Also updates dir_name_from_id to handle local paths (strip ./) and
URLs (strip .tgz extension), and passes devcontainer_dir to
resolve_features instead of build_context.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
When neither .devcontainer/devcontainer.json nor .devcontainer.json
exists, scan .devcontainer/ for subdirectories containing a
devcontainer.json. Subdirectories are sorted alphabetically and the
first match is used. Standard locations still take priority.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Features can now declare onCreateCommand, postCreateCommand, and
postStartCommand lifecycle hooks. These are collected in install order
via ResolvedFeatures and appended after the devcontainer.json lifecycle
commands during resolution.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add containerEnv field to FeatureMetadata and introduce ResolvedFeatures
struct that collects container_env from each feature in install order.
Feature containerEnv is merged with devcontainer.json containerEnv
(devcontainer.json wins on conflicts) before generating the Dockerfile.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add dependsOn field to FeatureMetadata for declaring hard feature
dependencies per the devcontainer spec. The topo_sort function now
handles both installsAfter and dependsOn edges with deduplication.
Missing dependsOn targets are auto-injected (fetched and added to
the sorted feature set with the specified options).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Stop baking remoteEnv into Dockerfile (only containerEnv belongs as ENV)
- Merge forwardPorts with compose ports in compose mode (with dedup)
- Support build.target (parsed with variable substitution)
- Handle forwardPorts string formats like "8080:80" and "9090"
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add onCreateCommand lifecycle hook (parsed, resolved, exposed as on_create_commands)
- Expose build.args on DevcontainerConfig for docker build --build-arg
- Wire containerEnv into generated Dockerfile as ENV directives (remoteEnv overrides on collision)
- Support dockerComposeFile as array of paths with merge semantics (last wins for image/build/user, ports accumulate, env overrides)
- Update DEVCONTAINER-COMPATIBILITY.md and INTEGRATION.md docs
- Add e2e tests with realistic Python and compose project fixtures
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Standalone crate that reads devcontainer.json (with JSONC support), fetches
OCI Features via oras, and produces a resolved config containing a generated
Dockerfile, lifecycle hooks, environment variables, and forwarded ports.
Supports image, Dockerfile, and Docker Compose modes with devcontainer
variable substitution. No coupling to arc-workflows or DaytonaSandbox.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
