Upgrade kaniko version && force flag

Dockerfile

@@ -1,11 +1,16 @@
-FROM gcr.io/kaniko-project/executor:debug-v0.19.0
+FROM busybox
+FROM gcr.io/kaniko-project/executor:v1.7.0
 
+ENV PATH /bin
 ENV HOME /root
 ENV USER root
 ENV SSL_CERT_DIR=/kaniko/ssl/certs
 ENV DOCKER_CONFIG /kaniko/.docker/
 ENV DOCKER_CREDENTIAL_GCR_CONFIG /kaniko/.config/gcloud/docker_credential_gcr_config.json
 
+COPY --from=busybox / /
+
 # add the wrapper which acts as a drone plugin
 COPY plugin.sh /kaniko/plugin.sh
+
 ENTRYPOINT [ "/kaniko/plugin.sh" ]

plugin.sh

@@ -1,4 +1,4 @@
-#!/busybox/sh
+#!/bin/sh
 
 set -euo pipefail
 
@@ -99,6 +99,7 @@ fi
 /kaniko/executor -v ${LOG} \
     --context=${CONTEXT} \
     --dockerfile=${DOCKERFILE} \
+    --force \
     ${EXTRA_OPTS} \
     ${DESTINATIONS} \
     ${CACHE:-} \