Reduce size of docker images for XACML-PDP

Avoid creating extra layers when extracting tarball
Remove redundant chown/chmod commands
Reduce size of Alpine image by 32% (379MB to 259MB)
Reduce size of OpenSuse image by 23% (546MB to 423MB)

Issue-ID: POLICY-4273
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: I5b141b27d9db855c0b624612a54fc525845a02d7

3 files changed, 27 insertions, 18 deletions

diff --git a/packages/policy-xacmlpdp-docker/src/main/docker/Dockerfile b/packages/policy-xacmlpdp-docker/src/main/docker/Dockerfile
index dd76e509..d87cfecc 100644
--- a/packages/policy-xacmlpdp-docker/src/main/docker/Dockerfile
+++ b/packages/policy-xacmlpdp-docker/src/main/docker/Dockerfile
@@ -19,6 +19,12 @@
 # SPDX-License-Identifier: Apache-2.0
 # ============LICENSE_END=========================================================
 #-------------------------------------------------------------------------------
+
+FROM busybox AS tarball
+RUN mkdir /packages /extracted
+COPY /maven/lib/policy-xacmlpdp.tar.gz /packages/
+RUN tar xvzf /packages/policy-xacmlpdp.tar.gz --directory /extracted/
+
 FROM onap/policy-jre-alpine:2.4.3
 
 LABEL maintainer="Policy Team"
@@ -39,17 +45,15 @@ ENV POLICY_HOME=$POLICY_HOME/pdpx
 RUN apk update && \
     apk add mariadb-client && \
     apk add postgresql-client && \
-    mkdir -p $POLICY_HOME $POLICY_LOGS $POLICY_HOME/etc/ssl $POLICY_HOME/bin $POLICY_HOME/apps && \
-    chown -R policy:policy $POLICY_HOME $POLICY_LOGS && mkdir /packages
+    mkdir -p $POLICY_HOME $POLICY_LOGS && \
+    chown -R policy:policy $POLICY_HOME $POLICY_LOGS
 
-COPY /maven/* /packages
-RUN tar xvfz /packages/policy-xacmlpdp.tar.gz --directory $POLICY_HOME && \
-    rm /packages/policy-xacmlpdp.tar.gz
+COPY --chown=policy:policy --from=tarball /extracted $POLICY_HOME
 
 WORKDIR $POLICY_HOME
-COPY policy-pdpx.sh  bin/.
-COPY policy-pdpx-pg.sh  bin/.
-RUN chown -R policy:policy * && chmod 755 bin/*.sh && chmod 755 mysql/bin/*.sh && chmod 755 postgres/bin/*.sh
+COPY --chown=policy:policy policy-pdpx.sh bin/
+COPY --chown=policy:policy policy-pdpx-pg.sh bin/
+RUN chmod 755 bin/*.sh
 
 USER policy
 WORKDIR $POLICY_HOME/bin
diff --git a/packages/policy-xacmlpdp-docker/src/main/docker/suse.Dockerfile b/packages/policy-xacmlpdp-docker/src/main/docker/suse.Dockerfile
index 67ae7c1e..c8732ca8 100644
--- a/packages/policy-xacmlpdp-docker/src/main/docker/suse.Dockerfile
+++ b/packages/policy-xacmlpdp-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-xacmlpdp.tar.gz /packages/
+RUN tar xvzf /packages/policy-xacmlpdp.tar.gz --directory /extracted/
+
 FROM opensuse/leap:15.4
 
 LABEL maintainer="Policy Team"
@@ -37,22 +43,19 @@ ENV POLICY_HOME=/opt/app/policy/pdpx
 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 mariadb-client netcat-openbsd postgresql tar && \
+RUN zypper -n -q install --no-recommends java-11-openjdk-headless mariadb-client netcat-openbsd postgresql && \
     zypper -n -q update && zypper -n -q clean --all && \
     groupadd --system policy && \
     useradd --system --shell /bin/sh -G policy policy && \
-    mkdir -p $POLICY_LOGS $POLICY_HOME $POLICY_HOME/etc/ssl $POLICY_HOME/bin $POLICY_HOME/apps && \
-    chown -R policy:policy $POLICY_HOME $POLICY_LOGS && \
-    mkdir /packages
+    mkdir -p $POLICY_HOME $POLICY_LOGS && \
+    chown -R policy:policy $POLICY_HOME $POLICY_LOGS
 
-COPY /maven/* /packages
-RUN tar xvfz /packages/policy-xacmlpdp.tar.gz --directory $POLICY_HOME && \
-    rm /packages/policy-xacmlpdp.tar.gz
+COPY --chown=policy:policy --from=tarball /extracted $POLICY_HOME
 
 WORKDIR $POLICY_HOME
-COPY policy-pdpx.sh  bin/.
-COPY policy-pdpx-pg.sh  bin/.
-RUN chown -R policy:policy * && chmod 755 bin/*.sh && chmod 755 mysql/bin/*.sh && chmod 755 postgres/bin/*.sh
+COPY --chown=policy:policy policy-pdpx.sh bin/
+COPY --chown=policy:policy policy-pdpx-pg.sh bin/
+RUN chmod 755 bin/*.sh
 
 USER policy
 WORKDIR $POLICY_HOME/bin
diff --git a/packages/policy-xacmlpdp-tarball/src/main/package/tarball/assembly.xml b/packages/policy-xacmlpdp-tarball/src/main/package/tarball/assembly.xml
index 354b12a7..8a8c1544 100644
--- a/packages/policy-xacmlpdp-tarball/src/main/package/tarball/assembly.xml
+++ b/packages/policy-xacmlpdp-tarball/src/main/package/tarball/assembly.xml
@@ -68,6 +68,7 @@
             </includes>
             <outputDirectory>${file.separator}mysql${file.separator}bin</outputDirectory>
             <lineEnding>unix</lineEnding>
+            <fileMode>0755</fileMode>
         </fileSet>
         <fileSet>
             <directory>${project.basedir}/src/main/resources/mysql/sql
@@ -86,6 +87,7 @@
             </includes>
             <outputDirectory>${file.separator}postgres${file.separator}bin</outputDirectory>
             <lineEnding>unix</lineEnding>
+            <fileMode>0755</fileMode>
         </fileSet>
         <fileSet>
             <directory>${project.basedir}/src/main/resources/postgres/sql