Refactor Dockerfile and Packer configuration: streamline file copying…

… and installation process

Dockerfile

@@ -4,8 +4,11 @@ FROM public.ecr.aws/lambda/python:3.11
 COPY requirements.txt /tmp/
 RUN pip install --no-cache-dir -r /tmp/requirements.txt -t ${LAMBDA_TASK_ROOT}
 
-# Copy the template_automation package
-COPY template_automation/ ${LAMBDA_TASK_ROOT}/template_automation/
+# Copy all code files for package installation
+COPY . /tmp/app/
+
+# Install the package in development mode to make it available to Python
+RUN pip install -e /tmp/app -t ${LAMBDA_TASK_ROOT}
 
 # Copy the root app.py file (this is essential for AWS Lambda to find the handler)
 COPY app.py ${LAMBDA_TASK_ROOT}/

packer.pkr.hcl

@@ -32,25 +32,19 @@ build {
     "source.docker.lambda"
   ]
 
+  # Copy the entire project directory for proper installation
   provisioner "file" {
-    source      = "./template_automation/"
-    destination = "/var/task/template_automation/"
-  }
-
-  provisioner "file" {
-    source      = "./app.py"
-    destination = "/var/task/app.py"
-  }
-
-  provisioner "file" {
-    source      = "./requirements.txt"
-    destination = "/var/task/requirements.txt"
+    source      = "./"
+    destination = "/tmp/"
   }
 
   provisioner "shell" {
     inline = [
-      "ls -la /var/task",  # Debug: List contents
-      "pip3 install -r /var/task/requirements.txt -t /var/task"
+      "ls -la /tmp",  # Debug: List contents of tmp directory
+      "pip3 install -r /tmp/requirements.txt -t /var/task",
+      "pip3 install /tmp -t /var/task",  # Install the package itself
+      "cp /tmp/app.py /var/task/",  # Copy the entry point file
+      "ls -la /var/task"  # Debug: List contents of task directory
     ]
   }