Reduce size of docker images for API

Remove unused jar files from image (not needed since spring boot)
Avoid creating extra layers when extracting tarball
Reduce size of Alpine image by 73% (956MB to 259MB)
Reduce size of OpenSuse image by 62% (1.12GB to 423MB)

Issue-ID: POLICY-4265
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I321cd42ade294a8af40c64612037d3ca1cf58341

3 files changed, 29 insertions, 31 deletions

diff --git a/packages/policy-api-docker/src/main/docker/Dockerfile b/packages/policy-api-docker/src/main/docker/Dockerfile
index 7fd6da9b..8ac777c3 100644
--- a/packages/policy-api-docker/src/main/docker/Dockerfile
+++ b/packages/policy-api-docker/src/main/docker/Dockerfile
@@ -20,6 +20,12 @@
 # SPDX-License-Identifier: Apache-2.0
 # ============LICENSE_END=========================================================
 #-------------------------------------------------------------------------------
+
+FROM busybox AS tarball
+RUN mkdir /packages /extracted
+COPY /maven/lib/policy-api.tar.gz /packages/
+RUN tar xvzf /packages/policy-api.tar.gz --directory /extracted/
+
 FROM onap/policy-jre-alpine:2.4.3
 
 LABEL maintainer="Policy Team"
@@ -37,18 +43,16 @@ ARG POLICY_LOGS=/var/log/onap/policy/api
 ENV POLICY_LOGS=$POLICY_LOGS
 ENV POLICY_HOME=$POLICY_HOME/api
 
-RUN mkdir -p $POLICY_LOGS $POLICY_HOME $POLICY_HOME/bin && \
-    chown -R policy:policy $POLICY_HOME $POLICY_LOGS && \
-    mkdir /packages
-COPY /maven/lib/policy-api.tar.gz /packages
-RUN tar xvfz /packages/policy-api.tar.gz --directory $POLICY_HOME && \
-    rm /packages/policy-api.tar.gz
+RUN mkdir -p $POLICY_HOME $POLICY_LOGS && \
+    chown -R policy:policy $POLICY_HOME $POLICY_LOGS
+
+COPY --chown=policy:policy --from=tarball /extracted/ $POLICY_HOME/
 
 WORKDIR $POLICY_HOME
-COPY policy-api.sh  bin/.
-COPY /maven/api.jar /app
+COPY --chown=policy:policy policy-api.sh bin/
+COPY --chown=policy:policy /maven/api.jar /app/
 
-RUN chown -R policy:policy * && chmod 755 bin/*.sh && chown -R policy:policy /app
+RUN chmod 755 bin/*.sh
 
 USER policy
 WORKDIR $POLICY_HOME/bin
diff --git a/packages/policy-api-docker/src/main/docker/suse.Dockerfile b/packages/policy-api-docker/src/main/docker/suse.Dockerfile
index 712daad6..e3c42bf9 100644
--- a/packages/policy-api-docker/src/main/docker/suse.Dockerfile
+++ b/packages/policy-api-docker/src/main/docker/suse.Dockerfile
@@ -18,6 +18,12 @@
 # SPDX-License-Identifier: Apache-2.0
 # ============LICENSE_END=========================================================
 #-------------------------------------------------------------------------------
+
+FROM busybox AS tarball
+RUN mkdir /packages /extracted
+COPY /maven/lib/policy-api.tar.gz /packages/
+RUN tar xvzf /packages/policy-api.tar.gz --directory /extracted/
+
 FROM opensuse/leap:15.4
 
 LABEL maintainer="Policy Team"
@@ -37,22 +43,20 @@ ENV POLICY_HOME=/opt/app/policy/api
 ENV LANG=en_US.UTF-8 LANGUAGE=en_US:en LC_ALL=en_US.UTF-8
 ENV JAVA_HOME=/usr/lib64/jvm/java-11-openjdk-11
 
-RUN zypper -n -q install --no-recommends gzip java-11-openjdk-headless netcat-openbsd tar && \
+RUN zypper -n -q install --no-recommends java-11-openjdk-headless netcat-openbsd && \
     zypper -n -q update && zypper -n -q clean --all && \
     groupadd --system policy && \
     useradd --system --shell /bin/sh -G policy policy && \
-    mkdir -p /app $POLICY_LOGS $POLICY_HOME $POLICY_HOME/bin && \
-    chown -R policy:policy /app $POLICY_HOME $POLICY_LOGS && \
-    mkdir /packages
-COPY /maven/lib/policy-api.tar.gz /packages
-RUN tar xvfz /packages/policy-api.tar.gz --directory $POLICY_HOME && \
-    rm /packages/policy-api.tar.gz
+    mkdir -p $POLICY_HOME $POLICY_LOGS && \
+    chown -R policy:policy $POLICY_HOME $POLICY_LOGS
+
+COPY --chown=policy:policy --from=tarball /extracted/ $POLICY_HOME/
 
 WORKDIR $POLICY_HOME
-COPY policy-api.sh  bin/.
-COPY /maven/api.jar /app
+COPY --chown=policy:policy policy-api.sh bin/
+COPY --chown=policy:policy /maven/api.jar /app/
 
-RUN chown -R policy:policy * && chmod 755 bin/*.sh && chown -R policy:policy /app
+RUN chmod 755 bin/*.sh
 
 USER policy
 WORKDIR $POLICY_HOME/bin
diff --git a/packages/policy-api-tarball/src/main/package/tarball/assembly.xml b/packages/policy-api-tarball/src/main/package/tarball/assembly.xml
index 777ea85c..29ed3433 100644
--- a/packages/policy-api-tarball/src/main/package/tarball/assembly.xml
+++ b/packages/policy-api-tarball/src/main/package/tarball/assembly.xml
@@ -2,6 +2,7 @@
   ============LICENSE_START=======================================================
    Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
    Modifications Copyright (C) 2022 Bell Canada. All rights reserved.
+   Modifications Copyright (C) 2022 Nordix Foundation.
   ================================================================================
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
@@ -25,17 +26,6 @@
         <format>tar.gz</format>
     </formats>
     <includeBaseDirectory>false</includeBaseDirectory>
-    <dependencySets>
-        <dependencySet>
-            <useProjectArtifact>true</useProjectArtifact>
-            <outputDirectory>${file.separator}lib</outputDirectory>
-            <unpack>false</unpack>
-            <scope>runtime</scope>
-            <includes>
-                <include>*:jar</include>
-            </includes>
-        </dependencySet>
-    </dependencySets>
     <fileSets>
         <fileSet>
             <directory>${project.basedir}/src/main/resources/etc
@@ -60,4 +50,4 @@
             <lineEnding>keep</lineEnding>
         </fileSet>
     </fileSets>
-</assembly>
\ No newline at end of file
+</assembly>