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Update README to reflect current local testing and building considerations #80

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merged 3 commits into from
Feb 15, 2021
Merged

Update README to reflect current local testing and building considerations #80

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66dcdfc
Update README to reflect current local testing and building considera…
IamfromSpace Feb 10, 2021
adc6d72
Update local execution docker volume path to correct working example.
IamfromSpace Feb 10, 2021
a4c5ff5
Minor fixes.
IamfromSpace Feb 15, 2021
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28 changes: 26 additions & 2 deletions README.md
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Expand Up @@ -110,6 +110,20 @@ executables:
# ...
```

You'll need to either build on a compatible linux host or inside a compatible docker container (or some other mechanism like nix).
Note that current Stack LTS images are _not_ compatible.
If you see an error message that contains "version 'GLIBC_X.XX' not found" when running (hosted or locally), then your build environment is not compatible.

Enable stack's docker integration and define an optional image within stack.yaml:

```yaml
# file: stack.yaml
docker:
enabled: true
# If omitted, this defaults to fpco/stack-build:lts-${YOUR_LTS_VERSION}
image: ${BUILD_IMAGE}
```

Don't forget to define your [CloudFormation] stack:

```yaml
Expand Down Expand Up @@ -164,7 +178,6 @@ aws lambda invoke \

- [Stack][stack.yaml]
- [Docker]
- [aws-sam-cli] (>v0.8.0)

### Build

Expand All @@ -173,7 +186,18 @@ docker pull fpco/stack-build:lts-{version} # First build only, find the latest v
stack build --copy-bins
```

### Execute
### Execute w/ Docker

```bash
echo '{ "accountId": "byebye" }' | docker run -i --rm \
-e DOCKER_LAMBDA_USE_STDIN=1 \
-v ${PWD}/.stack-work/docker/_home/.local/bin/:/var/task \
lambci/lambda:provided
```

### Execute w/ SAM Local

Note that hal currently only supports [aws-sam-cli] on versions <1.0.

```bash
echo '{ "accountId": "byebye" }' | sam local invoke --region us-east-1
Expand Down