operator: add musl based autoinstrumentation to docker image (#162)

* operator: add musl based autoinstrumentation in the Docker image

* operator: build the docker image on ci

Author: xrmx

.github/workflows/ci.yml

@@ -39,13 +39,22 @@ jobs:
     - run: pip install pip-licenses
     - run: pip-licenses
 
-  operator-requirements-installable:
+  operator-image-buildable:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
     - uses: ./.github/actions/env-install
-    - run: pip install .
-    - run: pip install -r operator/requirements.txt
+    - run: pip install build
+    - run: python -m build
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3.7.1
+    - name: Log in to the Elastic Container registry
+      uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
+      with:
+        registry: ${{ secrets.ELASTIC_DOCKER_REGISTRY }}
+        username: ${{ secrets.ELASTIC_DOCKER_USERNAME }}
+        password: ${{ secrets.ELASTIC_DOCKER_PASSWORD }}
+    - run: docker build -f operator/Dockerfile --build-arg DISTRO_DIR=./dist .
 
   test:
     runs-on: ubuntu-latest

operator/Dockerfile

@@ -16,8 +16,26 @@ RUN mkdir workspace
 
 RUN pip install --no-cache-dir --target workspace /opt/distro/*.whl -r requirements.txt
 
+FROM python:3.12-alpine AS build-musl
+
+ARG DISTRO_DIR
+
+COPY ${DISTRO_DIR} /opt/distro
+
+WORKDIR /operator-build
+
+ADD operator/requirements.txt .
+
+RUN mkdir workspace
+
+RUN apk add gcc python3-dev musl-dev linux-headers
+
+RUN pip install --no-cache-dir --target workspace /opt/distro/*.whl -r requirements.txt
+
 FROM docker.elastic.co/wolfi/chainguard-base:latest@sha256:90888b190da54062f67f3fef1372eb0ae7d81ea55f5a1f56d748b13e4853d984
 
 COPY --from=build /operator-build/workspace /autoinstrumentation
+COPY --from=build-musl /operator-build/workspace /autoinstrumentation-musl
 
 RUN chmod -R go+r /autoinstrumentation
+RUN chmod -R go+r /autoinstrumentation-musl