Fix docker images (#1919)

Signed-off-by: Marinov Avgustin <Avgustin.Marinov@bosch.com>

hawkbit-runtime/docker/docker_build/Dockerfile-mysql

@@ -15,13 +15,14 @@ COPY KEY .
 RUN set -x &&\
  apk add --no-cache --virtual build-dependencies gnupg unzip libressl wget &&\
  gpg --import KEY &&\
- mkdir -p ${BUILD_DIR} &&\
- cd ${BUILD_DIR} &&\
  wget -O ${APP}.jar --no-verbose https://repo1.maven.org/maven2/org/eclipse/hawkbit/${APP}/${VERSION}/${APP}-${VERSION}.jar &&\
  wget -O ${APP}.jar.asc --no-verbose https://repo1.maven.org/maven2/org/eclipse/hawkbit/${APP}/${VERSION}/${APP}-${VERSION}.jar.asc &&\
  gpg --batch --verify ${APP}.jar.asc ${APP}.jar &&\
+ rm /${APP}.jar.asc /KEY &&\
+ mkdir -p ${BUILD_DIR} &&\
+ cd ${BUILD_DIR} &&\
  java -Djarmode=tools -jar /${APP}.jar extract --layers --launcher --destination . &&\
- rm ${APP}.jar ${APP}.jar.asc /KEY
+ rm /${APP}.jar
 
 ARG MARIADB_DRIVER_VERSION=3.1.4
 COPY KEY-mysql .