Third party attributions in opencost artifacts

Signed-off-by: Anders Swanson <anders.swanson@oracle.com>

Dockerfile

@@ -43,6 +43,7 @@ LABEL org.opencontainers.image.url=https://github.com/opencost/opencost
 
 RUN apk add --update --no-cache ca-certificates
 COPY --from=build-env /go/bin/app /go/bin/app
+ADD --chmod=644 ./THIRD_PARTY_LICENSES.txt /THIRD_PARTY_LICENSES.txt
 ADD --chmod=644 ./configs/default.json /models/default.json
 ADD --chmod=644 ./configs/azure.json /models/azure.json
 ADD --chmod=644 ./configs/aws.json /models/aws.json

Dockerfile.cross

@@ -13,6 +13,7 @@ ARG binarypath
 
 RUN apk add --update --no-cache ca-certificates
 
+ADD --chmod=644 ./THIRD_PARTY_LICENSES.txt /THIRD_PARTY_LICENSES.txt
 ADD --chmod=644 ./configs/default.json /models/default.json
 ADD --chmod=644 ./configs/azure.json /models/azure.json
 ADD --chmod=644 ./configs/aws.json /models/aws.json