Reduce CCSDK docker images size

onap/ccsdk-odl-fluorine-alpine-image from 768MB to 526MB
onap/ccsdk-odlsli-alpine-image from 1.36GB to 666MB

Signed-off-by: Matej Klotton <matej.klotton@pantheon.tech>
Change-Id: I80dca08539ea91622ccb00edbe675a0b3203a183

3 files changed, 49 insertions, 52 deletions

diff --git a/alpine/src/main/docker/Dockerfile b/alpine/src/main/docker/Dockerfile
index 185fab43..6cbceaf4 100644
--- a/alpine/src/main/docker/Dockerfile
+++ b/alpine/src/main/docker/Dockerfile
@@ -11,4 +11,4 @@ ENV HTTPS_PROXY ${HTTPS_PROXY}
 ENV https_proxy ${HTTPS_PROXY}
 
 # Add tools needed for OpenDaylight
-RUN apk update && apk add bash git openjdk8 maven mysql-client nodejs py-pip graphviz unzip rsync nss
+RUN apk update && apk --no-cache add bash git openjdk8 maven mysql-client nodejs py-pip graphviz unzip rsync nss
diff --git a/odlsli/odlsli-alpine/src/main/docker/Dockerfile b/odlsli/odlsli-alpine/src/main/docker/Dockerfile
index 926aa0b5..97c5ae4c 100644
--- a/odlsli/odlsli-alpine/src/main/docker/Dockerfile
+++ b/odlsli/odlsli-alpine/src/main/docker/Dockerfile
@@ -1,6 +1,27 @@
-# Base ubuntu with added packages needed for open ecomp
+# Prepare stage for multistage image build
+## START OF STAGE0 ##
+FROM ${base.image.name}:${project.docker.latestfulltag.version} AS stage0
+
+ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
+ENV ODL_HOME /opt/opendaylight
+
+# copy the opendaylight credentials
+COPY idmlight.db.mv.db $ODL_HOME/data
+
+# copy CCSDK mvn artifacts to ODL repository
+COPY system /tmp/system
+RUN rsync -a /tmp/system $ODL_HOME
+
+# copy deliverables to opt
+COPY opt /opt
+COPY org.ops4j.pax.logging.cfg $ODL_HOME/etc/org.ops4j.pax.logging.cfg
+## END OF STAGE0 ##
+
+
 FROM ${base.image.name}:${project.docker.latestfulltag.version}
+
 MAINTAINER CCSDK Team (onap-ccsdk@lists.onap.org)
+
 ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
 ENV ODL_HOME /opt/opendaylight
 ENV SDNC_CONFIG_DIR /opt/onap/ccsdk/data/properties
@@ -10,57 +31,22 @@ ENV CCSDK_FEATURES_REPO mvn:org.onap.ccsdk.features/ccsdk-features-all/${ccsdk.f
 ENV CCSDK_FEATURES_SDNR_WT_REPO mvn:org.onap.ccsdk.features.sdnr.wt/sdnr-wt-feature-aggregator/${ccsdk.features.version}/xml/features
 ENV CCSDK_SLI_NORTHBOUND_REPO mvn:org.onap.ccsdk.sli.northbound/ccsdk-sli-northbound-all/${ccsdk.sli.northbound.version}/xml/features
 ENV CCSDK_SLI_PLUGINS_REPO mvn:org.onap.ccsdk.sli.plugins/ccsdk-sli-plugins-all/${ccsdk.sli.plugins.version}/xml/features
-
 ENV ANSIBLE_GPG_KEY ${ansible.gpg.key}
 ENV ODL_BOOT_FEATURES_EXTRA ${odl.boot.features.extra}
 
-# copy the opendaylight credentials
-COPY idmlight.db.mv.db $ODL_HOME/data
+# Install sudo and IP utilities
+RUN apk update && apk --no-cache add sudo iputils openssl
 
+# Enable wheel group
+RUN sed -e 's/# %wheel ALL=(ALL) NOPASSWD: ALL/%wheel ALL=(ALL) NOPASSWD: ALL/g' -i /etc/sudoers
 
-# copy CCSDK mvn artifacts to ODL repository
-COPY system /tmp/system
-RUN rsync -a /tmp/system $ODL_HOME && rm -rf /tmp/system
+COPY --from=stage0 --chown=odl:odl /opt /opt
 
 # Add CCSDK repositories to boot repositories
 RUN cp $ODL_HOME/etc/org.apache.karaf.features.cfg $ODL_HOME/etc/org.apache.karaf.features.cfg.orig
-
 RUN sed -i -e "\|featuresRepositories|s|$|, ${CCSDK_SLI_CORE_REPO}, ${CCSDK_SLI_ADAPTORS_REPO}, ${CCSDK_SLI_NORTHBOUND_REPO}, ${CCSDK_SLI_PLUGINS_REPO}, ${CCSDK_FEATURES_REPO}|"  $ODL_HOME/etc/org.apache.karaf.features.cfg
 RUN sed -i -e "\|featuresBoot[^a-zA-Z]|s|$|,${ODL_BOOT_FEATURES_EXTRA}|"  $ODL_HOME/etc/org.apache.karaf.features.cfg
 
-# Install sudo and IP utilities
-RUN apk update && apk add sudo iputils openssl
-
-# Enable wheel group
-RUN sed -e 's/# %wheel ALL=(ALL) NOPASSWD: ALL/%wheel ALL=(ALL) NOPASSWD: ALL/g' -i /etc/sudoers
-
-# Create odl user
-RUN addgroup -S odl && adduser -S odl -G odl
-RUN addgroup odl wheel
-
-# Install ansible
-#COPY ansible-sources.list /etc/apt/sources.list.d
-#RUN gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv ${ANSIBLE_GPG_KEY} && \
-#    gpg --export --armor ${ANSIBLE_GPG_KEY} | apt-key add - && \
-#    apk update && \
-#    apk add -y ansible
-
-# Install ansible-opendaylight
-#RUN ansible-galaxy install git+https://git.opendaylight.org/gerrit/integration/packaging/ansible-opendaylight
-
-# Copy ccsdk install playbook
-#COPY install_ccsdk.yml /tmp
-
-# Install features in ODL
-#RUN ansible-playbook -i "localhost," -c local /tmp/install_ccsdk.yml
-
-
-# copy deliverables to opt
-COPY --chown=odl:odl opt /opt
-COPY --chown=odl:odl org.ops4j.pax.logging.cfg /opt/opendaylight/etc/org.ops4j.pax.logging.cfg
-
-RUN chown -R odl:odl /opt
-
 USER odl
 ENTRYPOINT /opt/onap/ccsdk/bin/startODL.sh
 EXPOSE 8181
diff --git a/opendaylight/fluorine/fluorine-alpine/src/main/docker/Dockerfile b/opendaylight/fluorine/fluorine-alpine/src/main/docker/Dockerfile
index a043e1e9..b5e91b92 100644
--- a/opendaylight/fluorine/fluorine-alpine/src/main/docker/Dockerfile
+++ b/opendaylight/fluorine/fluorine-alpine/src/main/docker/Dockerfile
@@ -1,18 +1,29 @@
-# Base ubuntu with added packages needed for open ecomp
+# Prepare stage for multistage image build
+## START OF STAGE0 ##
+FROM onap/ccsdk-alpine-image:${project.docker.latestfulltag.version} AS stage0
+
+# Add the opendaylight's karaf and expand
+ADD karaf-${ccsdk.opendaylight.version}.tar.gz /opt/odl
+RUN mv /opt/odl/karaf-${ccsdk.opendaylight.version} /opt/opendaylight \
+ && ln -s  /opt/opendaylight /opt/opendaylight/karaf-${ccsdk.opendaylight.version} \
+ && ln -s /opt/opendaylight /opt/opendaylight/current \
+ && rmdir /opt/odl
+## END OF STAGE0 ##
+
+
 FROM onap/ccsdk-alpine-image:${project.docker.latestfulltag.version}
+
 MAINTAINER CCSDK Team (onap-ccsdk@lists.onap.org)
+
 ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk
 ENV ODL_HOME /opt/opendaylight/current
 
-# copy the opendaylight tar and expand
-COPY karaf-${ccsdk.opendaylight.version}.tar.gz /tmp/
-RUN mkdir -p /opt/odl \
-    && tar zxvf /tmp/karaf-${ccsdk.opendaylight.version}.tar.gz --directory /opt/odl \
-    && rm -rf /tmp/karaf-${ccsdk.opendaylight.version}.tar.gz \
-    && mv /opt/odl/karaf-${ccsdk.opendaylight.version} /opt/opendaylight \
-    && ln -s  /opt/opendaylight /opt/opendaylight/karaf-${ccsdk.opendaylight.version} \
-    && ln -s /opt/opendaylight /opt/opendaylight/current
- 
+# Create odl user
+RUN addgroup -S odl
+RUN adduser -S odl -G odl
+RUN addgroup odl wheel
+
+COPY --from=stage0 --chown=odl:odl /opt /opt
 
 # workaround till we get proxy working
 RUN mkdir -p /opt/opendaylight/system/org/mariadb/jdbc/mariadb-java-client/${ccsdk.mariadb-connector-java.version}