fix(ts#strands-agent,py#strands-agent): fix Dockerfile whitespace and A2A port config

- Use <%_ _%> EJS trim tags in Dockerfiles to avoid extra blank lines
- Python A2A main.py reads PORT from env var (default 9000) so
  serve/serve-local targets can set the assigned port
- Python serve targets always set PORT env var for consistency

Author: nx-plugin-for-aws

packages/nx-plugin/src/py/strands-agent/__snapshots__/generator.spec.ts.snap

@@ -8,17 +8,13 @@ WORKDIR /app
 # Copy bundled package
 COPY --from=workspace dist/apps/test-project/bundle-arm /app
 
-
 EXPOSE 8080
 
-
 ENV PYTHONPATH=/app
 
 # Auto-instrument with AWS Distro for OpenTelemetry
 # https://aws-otel.github.io/docs/getting-started/python-sdk/auto-instr
-
 CMD ["python", "bin/opentelemetry-instrument", "python", "-m", "proj_test_project.snapshot_bedrock_agent.main"]
-
 "
 `;
 

packages/nx-plugin/src/py/strands-agent/files/a2a/main.py.template

@@ -1,10 +1,14 @@
 import logging
+import os
 
-from .agent import get_agent
 from strands.multiagent.a2a import A2AServer
 
+from .agent import get_agent
+
 logging.basicConfig(level=logging.INFO)
 
+PORT = int(os.environ.get("PORT", "9000"))
+
 # Create A2A server (streaming enabled by default)
 _agent_ctx = get_agent(session_id="default")
 _agent = _agent_ctx.__enter__()
@@ -13,7 +17,7 @@ a2a_server = A2AServer(
     agent=_agent,
     name="<%= agentNameClassName %>",
     description="A Strands Agent exposed via the Agent-to-Agent (A2A) protocol.",
-    port=9000,
+    port=PORT,
 )
 
 # Expose as a FastAPI app so that `fastapi dev` can serve it with hot reloading

packages/nx-plugin/src/py/strands-agent/files/deploy/Dockerfile.template

@@ -5,18 +5,18 @@ WORKDIR /app
 # Copy bundled package
 COPY --from=workspace <%- bundleOutputDir %> /app
 
-<% if (protocol === 'A2A') { %>
+<%_ if (protocol === 'A2A') { _%>
 EXPOSE 9000
-<% } else { %>
+<%_ } else { _%>
 EXPOSE 8080
-<% } %>
+<%_ } _%>
 
 ENV PYTHONPATH=/app
 
 # Auto-instrument with AWS Distro for OpenTelemetry
 # https://aws-otel.github.io/docs/getting-started/python-sdk/auto-instr
-<% if (protocol === 'A2A') { %>
+<%_ if (protocol === 'A2A') { _%>
 CMD ["python", "bin/opentelemetry-instrument", "uvicorn", "<%- moduleName %>.<%- agentNameSnakeCase %>.main:app", "--host", "0.0.0.0", "--port", "9000"]
-<% } else { %>
+<%_ } else { _%>
 CMD ["python", "bin/opentelemetry-instrument", "python", "-m", "<%- moduleName %>.<%- agentNameSnakeCase %>.main"]
-<% } %>
+<%_ } _%>

packages/nx-plugin/src/py/strands-agent/generator.ts

@@ -198,6 +198,9 @@ export const pyStrandsAgentGenerator = async (
         options: {
           commands: [serveCommand],
           cwd: '{projectRoot}',
+          env: {
+            PORT: `${localDevPort}`,
+          },
         },
         continuous: true,
       },
@@ -207,6 +210,7 @@ export const pyStrandsAgentGenerator = async (
           commands: [serveCommand],
           cwd: '{projectRoot}',
           env: {
+            PORT: `${localDevPort}`,
             SERVE_LOCAL: 'true',
           },
         },

packages/nx-plugin/src/ts/strands-agent/__snapshots__/generator.spec.ts.snap

@@ -12,10 +12,8 @@ RUN npm install @aws/aws-distro-opentelemetry-node-autoinstrumentation@0.9.0
 # Copy bundled agent
 COPY --from=workspace dist/apps/test-project/bundle/agent/snapshot-bedrock-agent/index.js /app
 
-
 EXPOSE 8080
 
-
 # Auto-instrument with AWS Distro for OpenTelemetry
 # https://aws-otel.github.io/docs/getting-started/js-sdk/trace-metric-auto-instr
 CMD [ "node", "--require", "@aws/aws-distro-opentelemetry-node-autoinstrumentation/register", "index.js" ]

packages/nx-plugin/src/ts/strands-agent/files/deploy/Dockerfile.template

@@ -9,11 +9,11 @@ RUN npm install @aws/aws-distro-opentelemetry-node-autoinstrumentation@<%- adotV
 # Copy bundled agent
 COPY --from=workspace <%- distDir %>/bundle/agent/<%- name %>/index.js /app
 
-<% if (protocol === 'A2A') { %>
+<%_ if (protocol === 'A2A') { _%>
 EXPOSE 9000
-<% } else { %>
+<%_ } else { _%>
 EXPOSE 8080
-<% } %>
+<%_ } _%>
 
 # Auto-instrument with AWS Distro for OpenTelemetry
 # https://aws-otel.github.io/docs/getting-started/js-sdk/trace-metric-auto-instr