Add Docker healthcheck and add node_modules to the .dockerignore (#22)

Author: daniel-chambers

CHANGELOG.md

@@ -10,6 +10,7 @@ Changes to be included in the next upcoming release
 - Improved error messages when unsupported enum types or unions of literal types are found, and allow these types to be used in relaxed types mode ([#17](https://github.com/hasura/ndc-nodejs-lambda/pull/17))
 - Improved naming of types that reside outside of the main `functions.ts` file. Type names will now only be prefixed with a disambiguator if there is a naming conflict detected (ie. where two different types use the same name). Anonymous types are now also named in a shorter way. ([#21](https://github.com/hasura/ndc-nodejs-lambda/pull/21))
 - Updated NodeJS to v20 and TypeScript to v5.4.2 ([#23](https://github.com/hasura/ndc-nodejs-lambda/pull/23))
+- Added a built-in Docker healthcheck, and ignored `node_modules` from the Docker build ([#22](https://github.com/hasura/ndc-nodejs-lambda/pull/22))
 
 ## [1.1.0] - 2024-02-26
 - Updated to [NDC TypeScript SDK v4.2.0](https://github.com/hasura/ndc-sdk-typescript/releases/tag/v4.2.0) to include OpenTelemetry improvements. Traced spans should now appear in the Hasura Console

Dockerfile

@@ -1,6 +1,6 @@
 FROM node:20-alpine
 
-RUN apk add jq
+RUN apk add jq curl
 
 COPY /docker /scripts
 
@@ -9,4 +9,6 @@ RUN /scripts/package-restore.sh
 
 EXPOSE 8080
 
+HEALTHCHECK --interval=5s --timeout=10s --start-period=1s --retries=3 CMD [ "sh", "-c", "exec curl -f http://localhost:${HASURA_CONNECTOR_PORT:-8080}/health" ]
+
 CMD [ "sh", "/scripts/start.sh" ]

connector-definition/.dockerignore

@@ -1,2 +1,3 @@
 .hasura-connector/
 *.hml
+node_modules/