wolfskin/docker

Wolfskin TV container builds

Run from a full Git checkout with the upstream v* and p* tags available. The host needs Docker, GNU Make, Bash, Git, and flock (util-linux), not Java or the Android SDK.

git fetch origin --tags
make apk        # clean, signed default release: three ABI splits + universal
make test       # app default/debug suite plus wolfskin-design JVM/capture suite
make apk-debug  # default debug, no secrets; MPV stub and no extra codec decoders

APKs remain under app/build/outputs/apk/default/{release,debug}/. Debug builds are not playback-complete and must not be distributed as releases. Upstream's .github/workflows and dependency version catalog are unchanged; release builds use the catalog's exact Wholphin extension version (currently 0.2.4). Do not place local extension AARs in app/libs: upstream prefers them over the pinned GitHub Packages dependencies.

Upload release assets renamed to Wolfskin.apk / Wolfskin-<abi>.apk for the in-app updater. Gradle outputs Wholphin-default-release-<versionName>-<versionCode>[-<abi>].apk; strip the flavor, version, and code as well as replacing the prefix.

Upstream enables JVM unit tests only for debug variants; there is no testDefaultReleaseUnitTest task. make test uses the closest default-flavor task without changing upstream's test configuration.

Upstream v1.1.0 integration

The release merge brings Kotlin 2.4.21, Gradle 9.8.2, AGP 9.5.0, and ExoplayerHdrUtils 0.4.1. The pinned SDK/JDK image and serialized Gradle wrapper remain compatible without changes; native Wholphin extensions remain 0.2.4. There are no committed dependency lockfiles or Gradle verification metadata. Forgejo Actions stays disabled; upstream GitHub workflows remain dormant.

The app database upgrades from Room schema 35 through 40 to 41 on first launch after installation. The upstream migrations add series track choices and a home settings source preference. Downgrading with the upgraded database is not supported: a TV installation is a one-way step and requires explicit approval. The optional companion plugin can supply Discover credentials before locally saved Seerr profiles; do not configure an administrator API key in place of the household's per-profile Jellyfin login, which Conductarr uses for request routing.

Build only after committing a release merge: version names come from Git HEAD, not the working tree. An uncommitted merge still builds with the old version name. Neither an upstream merge nor its validation build authorizes a release or TV installation.

Wolfskin shell

Wolfskin UI lives in app/src/wolfskin/java, beside upstream source. The signed-in entry in MainContent.kt calls WolfskinApp; Wolfskin-only routes use the single Destination.Wolfskin subtype in the existing navigation stack. Other destinations continue through upstream DestinationContent. Full-screen player/settings pages cover the Wolfskin nav.

The independent :wolfskin-design module owns the shell components, fixed person colours, focus policy, per-person root-view memory, palette and motion. Its tokens.json is the copied approved TV-spec source, retaining the locked prototype SHA and provenance. shell-tokens.json and home-tokens.json add measured shell and Home geometry from that same prototype. Generate the committed Kotlin, CSS and checksum manifest together:

python3 wolfskin-design/generate_tokens.py
python3 wolfskin-design/generate_tokens.py --check

preBuild checks the manifest against the source JSON, generator and generated outputs. Editing any of them without regenerating fails the build. The shell uses the generated palette rather than the retired WOLFSKIN theme-enum value; the old numeric value is reserved.

Compose output maps source weights 600/650 to the platform Bold (700) face, which resolves consistently in native captures; the approved JSON weights stay unchanged. Nav, picker names, labels and pill weights use that same mapping. Nav label colour fades for 200 ms ease-out; the blob retains its critically damped spring.

Settings pills have a separate 1 dp stroke (2 px on the stage), not a focus ring. The stroke is inset within the fixed 20 dp / 40 px height; horizontal border-box padding includes it. The 6 px dash / 4 px gap follows the browser's 3:2 stroke-width ratios. Resting borders are white at 22% opacity; focused borders use ink at 40%.

The small gear under the final person opens Settings with Requests focused. Settings groups hand off to existing upstream pages; the Requests entry explicitly has no request data yet. Advanced settings → Wolfskin screens is the persistent rollout switch: turning it off renders upstream Home and library destinations with the upstream Backdrop and top scrim, while retaining Wolfskin's nav, picker and Settings list. Native Up traversal stays in content until the first focusable row, then enters the nav. Turning the switch on renders Wolfskin Home; later-slice screens remain explicitly labelled navigation targets.

Debug people, tabs and initials come from the shell-only projection of the locked prototype fixture in app/src/debug/assets/wolfskin-shell.json; release resources do not package it. Saved Jellyfin identities use existing upstream services. The shell makes no Conductarr calls and does not add Conductarr sign-in.

Native Roborazzi captures use Robolectric SDK 34 and w960dp-h540dp-xhdpi (1920×1080 at density 2.0). make test writes capture PNGs and the sampled Compose nav-spring curve to build/wolfskin-captures/. Key replays exercise the Android event adapter, including the 6/8/10/11-press shell paths. The profile hand-off capture targets the real HomeSettingsPage; Playback is a separate press-count path.

Robolectric SDK 28/30/34 runtimes resolve through Gradle's existing persistent dependency cache, then copy to wolfskin-design/build/robolectric-sdk/. Test workers use that local directory in offline mode instead of downloading Android JARs into the container's ephemeral home. A cache miss still needs Maven Central; rate-limited hosts can seed the existing cache from SHA512-verified local Maven artifacts without changing the wrapper or adding volumes.

Default-flavour launcher artwork and English, Hungarian and Polish string overrides live in app/src/default/res/. Legacy Wolfskin strings in 25 translated main resource folders have not yet been moved; non-default appstore/firetv flavours therefore combine upstream icons with some legacy Wolfskin text. Those flavours and a full locale migration are not certified by this slice. Debug assembly runs checkWolfskinBranding against every packaged APK through AGP's public artifact provider and AAPT2. It checks all string, plural and array configurations, rejecting user-visible upstream branding while preserving the upstream legal attribution and project URL. The check does not depend on incremental merge files.

Wolfskin Home

Home is one lazy frame: a non-rotating resume → Next up → newest → pick hero, Jellyfin shelves, per-destination "Your …" shelves and the Discover continuation. The final action opens Discover at its top. Discover (discover) and See all (see-all:{row-id}) are named integration targets, not implementations of those later screens. Title navigation remains the shell's later-slice target.

All Home components and immutable screen models live in :wolfskin-design. The shell's remembered view owns vertical position, each row's card and the bounded six-hour ratings session cache. Back preserves the viewport; returning to Home does not re-run focus-follow over a manually scrolled saved view. The next arrow re-enters visible content when scrolling moved focus off-screen. Pointing changes focus without activation, cards activate on key-up, and held OK events cannot activate twice.

HomeReadFacade is the only Home code importing Jellyfin API clients. Release variants read the selected user's Resume, Next up, newest titles and destination shelves, with app-private last-known-good projections through the shared atomic disk cache. A missing saved library becomes a recovery panel; a saved library stays visible when Jellyfin is unreachable. Playback resolves an actual film or episode and checks Jellyfin before opening upstream's player. No season, recommendation stub or different person's session is promoted to playback.

Debug variants additionally package the locked fixture and local artwork under wolfskin-design/src/debug/assets/wolfskin-home/; release variants exclude them. The fixture provider supplies the approved household data and Home states without network reads in tests. Conductarr sign-in is not implemented here: real signed-out Home hides every rating and shows "Discover needs sign-in". No Seerr fallback is used. Catalogue data and ratings in debug captures are fixture-backed.

Home images request exact slot sizes, use RGB565 for posters, disable crossfades, share a 64 MiB memory/128 MiB disk cache, limit image work to four reads and prefetch the next shelf. Rating plates use the TV locale, start at 14 sp, shrink to 12 sp and drop trailing entries rather than wrap. Their uncached read gate is 350 ms; cached focus returns without that delay.

Focus rings and native lift draw outside fixed slots. The Saved chip uses its own measured geometry rather than the smaller Settings pill; caption separators use the approved 40% opacity token. Vertical moves clamp to the short target row, including a final See all card, rather than preserving an invalid column.

make test includes HomeCaptureTest (23 native acceptance states) and the data-driven paths in wolfskin-home-presses.json: play next 2, resume 3, Discover 4, deep-row Back/Down 9, Trending 13 and Trending's See all card 33 presses. Home captures are written to build/wolfskin-captures/home/. Compare those images side by side with the frozen spec captures; Compose Roboto/JPEG rasterisation, the approved button-scale consolidation and removal of prototype sample pills are recorded differences, not a claim of browser pixel equality.

Toolchain and disk use

Dockerfile pins Temurin JDK 21.0.11+10 by image digest, command-line tools 23.0 and platform-tools 37.0.1 by archive and checksum, and build-tools 36.0.0 by SDK package version. The SDK manager registers platform 37.0 and its licenses; the build rejects any platform revision other than 2. An SDK revision upgrade therefore requires a deliberate Dockerfile update. Gradle comes from the committed wrapper. The image is built for linux/amd64; the default local image tag is wolfskin-build:sdk37-jdk21. Upstream's build timestamp means APKs are not byte-for-byte reproducible.

Gradle downloads and caches live in the named volume wolfskin-gradle, not /tmp. Module outputs stay in the checkout. Builds run with the host UID/GID, --no-daemon, and at most four workers. The repository's Git metadata is mounted read-only, including when the checkout is a linked worktree.

Override WOLFSKIN_BUILD_IMAGE to change the locally built image tag and WOLFSKIN_GRADLE_VOLUME to isolate a cache. make build-image builds only the image. Do not delete shared caches during another build.

Every Gradle container holds a host-side exclusive lock for its entire run. Concurrent targets sharing a cache queue rather than timing out on Gradle's cross-container cache journal lock; a waiting invocation prints one line. The default lock is /var/tmp/${WOLFSKIN_GRADLE_VOLUME}.gradle.lock (using wolfskin-gradle when unset). Override WOLFSKIN_GRADLE_LOCK_FILE with a path whose parent directory already exists. All callers sharing a volume must use the same lock path on the Docker host. Do not delete the file while builds are running or waiting. The lock releases automatically when the invocation exits.

Release credentials

The default escrow is /opt/stacks/ventoy/machine-parity/manifest-tank/secrets/wolfskin/. Check mountpoint -q /mnt/ventoy before using that path. Set WOLFSKIN_SECRETS_DIR to use another existing directory. Its required files are:

File	Contents
release.jks	Separate Wolfskin PKCS12 keystore, RSA 4096, alias wolfskin
release.properties	Java properties storePassword and keyPassword
github-packages-token	GitHub token with read:packages, username JustinZeus

The directory must be mode 0700, each file mode 0600, owned by the building user. Never commit them or put their contents in logs. Back up the keystore and passwords together: losing the release key forces a reinstall. Do not reuse wolfskin-android's key or the gh CLI login token.

Release builds mount escrow read-only. The token is loaded inside the container into upstream's ORG_GRADLE_PROJECT_WholphinExtensionsUsername and ORG_GRADLE_PROJECT_WholphinExtensionsPassword environment hooks, never a Docker command argument. The signing init script registers wolfskin; the nonsecret release-signing.properties is mounted as local.properties so upstream's release.signing.config hook selects it. Any host local.properties is hidden only for the duration of this container. Keystore and passwords stay outside the checkout and image. Missing credentials fail the release rather than silently shipping the MPV stub.

Versioning and local release markers

Upstream computes versionName from git describe --tags --long --match='v*', dropping the leading v, and computes versionCode from the count of all local v* and p* tags. Preserve and fetch those tags; a shallow or incomplete checkout can give an incorrect version. Use the full git describe output as the human release name.

After committing the intended release, with a clean checkout and fetched tags:

make release-tag
make apk

The helper creates one lightweight pwolfskin-YYYY_MM_DD tag in UTC, appending _1, _2, etc. on collision. Each marker adds one to versionCode without changing upstream's v*-based version name. It never pushes tags, publishes a release, or installs an APK. Do not delete published release markers. Tag creation and publication must be serialized between release operators.

Inspecting release artifacts

Use apksigner verify --verbose --print-certs APK and aapt2 dump badging APK inside the build image. Compare the signer SHA-256 with keytool -list -v -alias wolfskin -keystore /path/to/release.jks (enter its password privately). Inspect APK ZIP entries for real native MPV and ffmpeg libraries for each shipped ABI; a successful Java compilation alone does not prove that codec extensions are included.