Fix docker startup so that it works properly with stdio mode. Probably worthwhile to toss majority of this readme, less confusing

.github/workflows/build.yml

@@ -0,0 +1,39 @@
+name: build-container
+
+on:
+  push:
+    branches:
+      - main
+
+run-name: build-image-${{ github.run_id }}
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GHCR
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: true
+          tags: |
+            rooba/agentcoordinator:latest
+            rooba/agentcoordinator:${{ github.sha }}