I'm testing my code on Lambda and I've never received this error before and couldn't find any solutions online. I created a docker image for my code, so here's my Docker file that I pushed to ECR
FROM python:3.8
# Copy function code
COPY app.py ${LAMBDA_TASK_ROOT}
#Copy and install requirements
COPY requirements.txt ${LAMBDA_TASK_ROOT}
RUN pip install -r requirements.txt
ARG GITHUB_ACCESS_TOKEN
ARG TABLE_NAME
ARG AWS_ACCESS_KEY
ARG AWS_SECRET_KEY
ARG REGION
ENV GITHUB_ACCESS_TOKEN $GITHUB_ACCESS_TOKEN
ENV TABLE_NAME $TABLE_NAME
ENV AWS_ACCESS_KEY $AWS_ACCESS_KEY
ENV AWS_SECRET_KEY $AWS_SECRET_KEY
ENV REGION $REGION
# Set the CMD to the handler
CMD [ "app.handler" ]
Also here's the full error that showed up in my logs on lambda
START RequestId: d691e14e-349f-45c5-a4a7-b1b98a3e88be Version: $LATEST
IMAGE Launch error: exec: "app.handler": executable file not found in $PATH Entrypoint: [] Cmd: [app.handler] WorkingDir: []IMAGE Launch error: exec: "app.handler": executable file not found in $PATH Entrypoint: [] Cmd: [app.handler] WorkingDir: []END RequestId: d691e14e-349f-45c5-a4a7-b1b98a3e88be
REPORT RequestId: d691e14e-349f-45c5-a4a7-b1b98a3e88be Duration: 6.80 ms Billed Duration: 7 ms Memory Size: 128 MB Max Memory Used: 2 MB
RequestId: d691e14e-349f-45c5-a4a7-b1b98a3e88be Error: exec: "app.handler": executable file not found in $PATH
Runtime.InvalidEntrypoint
CodePudding user response：
Lambda images are not made from python:3.8 Docker image. Instead they should be made from public.ecr.aws/lambda/python:3.8. The lambda container images must be specially constructed to work correctly with lambda.
AWS docs explain this in details: