Optimize the workflow for publish builder

Signed-off-by: quicksilver <zhifeng.zhang@zilliz.com>

.env

@@ -1,4 +1,5 @@
 REPO=milvusdb/milvus-distributed-dev
 ARCH=amd64
 UBUNTU=18.04
-DATE_VERSION=20201119-080139
+DATE_VERSION=20201120-074234
+LATEST_DATE_VERSION=latest

build/builder.sh

@@ -20,6 +20,7 @@ if [ "${1-}" = "gdbserver" ]; then
 
     docker-compose pull --ignore-pull-failures gdbserver
     if [ "${CHECK_BUILDER:-}" == "1" ]; then
+        DATE_VERSION=latest docker-compose pull --ignore-pull-failures gdbserver
         docker-compose build gdbserver
     fi
     docker-compose up -d gdbserver
@@ -49,6 +50,7 @@ chmod -R 777 "${DOCKER_VOLUME_DIRECTORY:-.docker}"
 
 docker-compose pull --ignore-pull-failures ubuntu
 if [ "${CHECK_BUILDER:-}" == "1" ]; then
+    DATE_VERSION=latest docker-compose pull --ignore-pull-failures ubuntu
     docker-compose build ubuntu
 fi
 docker-compose run --rm -u "$uid:$gid" ubuntu "$@"

build/docker/env/cpu/ubuntu18.04/Dockerfile

@@ -50,7 +50,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     rm -rf /var/lib/apt/lists/*
 
 # Taken from - https://docs.docker.com/engine/examples/running_ssh_service/#environment-variables
-
 RUN mkdir /var/run/sshd && echo 'root:root' | chpasswd && \
     useradd -u 2000 -ms /bin/bash debugger && echo 'debugger:milvus' | chpasswd
 

docker-compose.yml

@@ -15,7 +15,7 @@ services:
       context: .
       dockerfile: build/docker/env/cpu/ubuntu${UBUNTU}/Dockerfile
       cache_from:
-        - ${REPO}:${ARCH}-ubuntu${UBUNTU}-${DATE_VERSION}
+        - ${REPO}:${ARCH}-ubuntu${UBUNTU}-${LATEST_DATE_VERSION}
     shm_size: 2G
     environment:
       <<: *ccache
@@ -33,7 +33,7 @@ services:
       context: .
       dockerfile: build/docker/env/cpu/ubuntu${UBUNTU}/Dockerfile
       cache_from:
-        - ${REPO}:${ARCH}-ubuntu${UBUNTU}-${DATE_VERSION}
+        - ${REPO}:${ARCH}-ubuntu${UBUNTU}-${LATEST_DATE_VERSION}
     security_opt: # options needed for gdb debugging
       - seccomp:unconfined
       - apparmor:unconfined