Add docker image and publishing rules for weaver

.github/workflows/publish-docker.yml

@@ -0,0 +1,54 @@
+name: Weaver Docker Generator
+on:
+  push:
+    tags: [ '**' ]
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+    paths:
+      - .github/workflows/publish-docker.yml
+      - 'src/**'
+      - 'creates/**'
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Build the Docker image
+      run: docker build . -t weaver && docker run --rm weaver --help
+
+  build-and-publish-docker:
+    runs-on: ubuntu-latest
+    needs: tests
+    steps:
+    - uses: actions/checkout@v4
+    - name: Build the Docker image
+      run: docker build . -t weaver
+    - name: Push the Docker image
+      if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')
+      run: |
+        echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+        function tag_and_push {
+          docker tag weaver "otel/weaver:${1}" && docker push "otel/weaver:${1}"
+        }
+        if [[ "${GITHUB_REF}" == "refs/heads/main" ]]; then
+          tag_and_push "latest"
+        elif [[ "${GITHUB_REF}" =~ refs/tags/v[0-9]+\.[0-9]+\.[0-9]+ ]]; then
+            TAG="${GITHUB_REF#"refs/tags/v"}"
+            tag_and_push "${TAG}"
+        else
+          tag_and_push "${GITHUB_REF#"refs/tags/"}"
+        fi
+    - name: Push the Dev Docker image
+      if: startsWith(github.ref, 'refs/heads/feature/')
+      run: |
+        echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
+        function tag_and_push {
+          docker tag weaver "otel/weaver:${1}" && docker push "otel/weaver:${1}"
+        }
+        TAG="${GITHUB_REF#"refs/heads/"}"
+        TAG="${TAG/"/"/"-"}"
+        tag_and_push "${TAG}"

Dockerfile

@@ -0,0 +1,21 @@
+
+# The build image
+FROM rust:1.76.0-alpine3.18 as weaver-build
+RUN apk add musl-dev
+WORKDIR /build
+# list out directories to avoid pulling local cargo `target/`
+COPY Cargo.toml /build/Cargo.toml
+COPY Cargo.lock /build/Cargo.lock
+COPY crates /build/crates
+COPY data /build/data
+COPY src /build/src
+COPY templates /build/templates
+COPY tests build/tests
+RUN cargo build --release
+
+# The runtime image
+FROM alpine:3.18.3
+LABEL maintainer="The OpenTelemetry Authors"
+WORKDIR /weaver
+COPY --from=weaver-build /build/target/release/weaver /weaver/weaver
+ENTRYPOINT ["/weaver/weaver"]