fix: dockerfile building

BUILD.md

@@ -116,4 +116,20 @@ If you are using Mac and openjdk7 (or higher), use the following option:
 
     $ make native LIBNAME=libsnappyjava.dylib
 
+## Building with musl libc
+This project now supports building with musl libc, which is commonly used in Alpine Linux. To build using musl:
 
+1. Use the provided Alpine-based Dockerfile:
+```bash
+docker build -f docker/Dockerfile.alpine -t snappy-java-alpine .
+docker run -it snappy-java-alpine sh
+make
+```
+
+2. The build process will:
+- Use musl libc instead of glibc
+- Statically link required libraries
+- Create a native library compatible with Alpine/musl systems
+
+The resulting library will be placed in:
+`src/main/resources/org/xerial/snappy/native/Linux-musl/x86_64/libsnappyjava.so`

docker/Dockerfile.alpine

@@ -1,16 +1,36 @@
 FROM alpine:3.18
 
+# Set workspace directory
+WORKDIR /work
+
+# Copy the project to the container
+COPY . .
+
 # Install build dependencies
 RUN apk add --no-cache \
+    openjdk8 \
     cmake \
     make \
     gcc \
     g++ \
     musl-dev \
-    linux-headers
+    linux-headers \
+    git \
+    util-linux \
+    bash \
+    curl
 
-# Set workspace directory
+# Install SBT
-WORKDIR /work
+RUN curl -L "https://github.com/sbt/sbt/releases/download/v1.9.7/sbt-1.9.7.tgz" | tar xz -C /usr/local
+ENV PATH="/usr/local/sbt/bin:${PATH}"
 
-# Build the project
+# Install python/pip
+ENV PYTHONUNBUFFERED=1
+RUN apk add --update --no-cache python3 && ln -sf python3 /usr/bin/python
+RUN python3 -m ensurepip
+RUN pip3 install --no-cache --upgrade pip setuptools
+
+# Set Env Vars
 ENV CC=gcc CXX=g++ TARGET_OS=Linux-musl
+ENV JAVA_HOME=/usr/lib/jvm/java-1.8-openjdk
+ENV PATH="${JAVA_HOME}/bin:${PATH}"

docker/README-musl.md

@@ -1,22 +0,0 @@
-# Building with musl libc
-
-This project now supports building with musl libc, which is commonly used in Alpine Linux. To build using musl:
-
-1. Use the provided Alpine-based Dockerfile:
-```bash
-docker build -f docker/Dockerfile.alpine -t snappy-java-alpine .
-```
-
-2. The build process will:
-- Use musl libc instead of glibc
-- Statically link required libraries
-- Create a native library compatible with Alpine/musl systems
-
-The resulting library will be placed in:
-`src/main/resources/org/xerial/snappy/native/Linux-musl/x86_64/libsnappyjava.so`
-
-## Testing
-To test the musl build:
-```bash
-docker run --rm snappy-java-alpine -cp target/snappy-java-*.jar org.xerial.snappy.SnappyLoader
-```