schnatterer/fernflower repository overview

⁠fernflower-docker

Unofficial docker images for JetBrains FernFlower Java decompiler⁠ basing on unofficial out-of-tree mirror fesh0r/fernflower⁠.

⁠Usage

Simplest example:

docker run --rm -v $(pwd):/src schnatterer/fernflower /src/Hello.class /src/

See also:

• fesh0r/fernflower⁠ for command line options.
• test/smoketest.sh⁠ a simple decompilation smoke test passed by these images

⁠Image flavors

The images are built daily, using the latest commit of fernflower and the latest version of the following base images. See table bellow for more details.

• native - GraalVM (Substrate VM) native image in scratch image (default)
• jre - classic JVM/JRE-based (adoptopenjdk/openjdk8)
• alpine-jre - classic JVM/JRE-based (adoptopenjdk/openjdk8:alpine)
• distroless - classic JVM/JRE-based (gcr.io/distroless/java:8)

For more deterministic builds, there are variants containing the git commits short hash referencing FernFlower's repo.

Base Image	Size	Shell	Package Manager	libc	Basic Linux Folders	Static Binary
native		☐	☐	☐	☐	☒
jre		☒	☒	☒	☒	☐
alpine-jre		☒	☒	☒	☒	☐
distroless		☐	☐	☐	☒	☐

⁠Development

• hooks/build is picked up and executed by docker cloud build.
• Try locally: SKIP_PUSH=true hooks/build