Issue with LICENSE during image build using Dockerfile

[nsaustin]

I'm not sure if something is different with this 20.3 release, but see below:

sudo ./build.sh 20.3.0.29587 e7631bc87e99ffe259d04ad60bcc8559aa46fbee808295955886c820821c798d Sending build context to Docker daemon 24.83MB Step 1/13 : FROM alpine AS builder ---> a187dde48cd2 Step 2/13 : MAINTAINER [email protected] ---> Running in 964238a90455 Removing intermediate container 964238a90455 ---> 0ac47aa8b770 Step 3/13 : LABEL name="AppDynamics Java Agent" vendor="AppDynamics" version="20.3.0" release="1" url="https://www.appdynamics.com" summary="AppDynamics solution for monitoring Java applications" description="AppDynamics agent for monitoring Java applications" ---> Running in a4ea462bc3e3 Removing intermediate container a4ea462bc3e3 ---> 6a2011edd6b8 Step 4/13 : ARG APPD_AGENT_VERSION ---> Running in 3c3fec407b5d Removing intermediate container 3c3fec407b5d ---> 5bb087c31d8e Step 5/13 : ARG APPD_AGENT_SHA256 ---> Running in cae1289ca18e Removing intermediate container cae1289ca18e ---> 0e77fd64d88e Step 6/13 : RUN apk --no-cache add unzip ---> Running in 9e9e46f1773c fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz (1/1) Installing unzip (6.0-r6) Executing busybox-1.31.1-r9.trigger OK: 6 MiB in 15 packages Removing intermediate container 9e9e46f1773c ---> c2fe697c963c Step 7/13 : COPY AppServerAgent-${APPD_AGENT_VERSION}.zip / ---> 7c7f34201d12 Step 8/13 : RUN if [ "x${APPD_AGENT_SHA256}" != "x" ]; then echo "${APPD_AGENT_SHA256} *AppServerAgent-${APPD_AGENT_VERSION}.zip" >> appd_checksum && sha256sum -c appd_checksum && rm appd_checksum && unzip -oq AppServerAgent-${APPD_AGENT_VERSION}.zip -d /tmp; else unzip -oq AppServerAgent-${APPD_AGENT_VERSION}.zip -d /tmp; fi ---> Running in f0835316a8ce AppServerAgent-20.3.0.29587.zip: OK Removing intermediate container f0835316a8ce ---> 38913216bf09 Step 9/13 : ADD LICENSE /licenses/ ADD failed: stat /var/lib/docker/tmp/docker-builder809200304/LICENSE: no such file or directory