chore: add GitHub Actions workflow for building and publishing ipmi-sim

Signed-off-by: Alex Lovell-Troy <alex@lovelltroy.org>

Author: alexlovelltroy

.github/workflows/build_ipmi_sim.yaml

@@ -0,0 +1,55 @@
+name: Build and publish ipmi-sim
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'ipmi_sim/**'
+      - 'ipmi_sim/VERSION'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v6
+
+      - name: Read version
+        id: version
+        run: echo "version=$(cat ipmi_sim/VERSION)" >> "$GITHUB_OUTPUT"
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Docker Login
+        uses: docker/login-action@v4
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v6
+        with:
+          images: ghcr.io/openchami/ipmi-sim
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=${{ steps.version.outputs.version }}
+            type=sha,prefix=,format=short
+
+      - name: Build and push
+        uses: docker/build-push-action@v7
+        with:
+          context: ipmi_sim
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

ipmi_sim/VERSION

@@ -0,0 +1 @@
+0.1.0