Adds links to the badges

allow us to not delete files

Dockerfile

@@ -1,10 +1,11 @@
-FROM alpine:3.6
-MAINTAINER Elementar Sistemas <contato@elementarsistemas.com.br>
+FROM alpine:3.10
+label maintainer="Elementar Sistemas <contato@elementarsistemas.com.br>"
 
-RUN apk --no-cache add bash py-pip && pip install awscli
+RUN apk --no-cache add bash py3-pip && pip3 install --no-cache-dir awscli
 ADD watch /watch
 
 VOLUME /data
 
+ENV S3_SYNC_FLAGS "--delete"
 ENTRYPOINT [ "./watch" ]
 CMD ["/data"]

README.md

@@ -1,5 +1,11 @@
 # docker-s3-volume
 
+[![Docker Build Status](https://img.shields.io/docker/build/elementar/s3-volume?style=plastic)](https://hub.docker.com/r/elementar/s3-volume)
+[![Docker Layers Count](https://img.shields.io/microbadger/layers/elementar/s3-volume?style=plastic)](https://hub.docker.com/r/elementar/s3-volume)
+[![Docker Version](https://img.shields.io/docker/v/elementar/s3-volume?style=plastic)](https://hub.docker.com/r/elementar/s3-volume)
+[![Docker Pull Count](https://img.shields.io/docker/pulls/elementar/s3-volume?style=plastic)](https://hub.docker.com/r/elementar/s3-volume)
+[![Docker Stars](https://img.shields.io/docker/stars/elementar/s3-volume?style=plastic)](https://hub.docker.com/r/elementar/s3-volume)
+
 Creates a Docker container that is restored and backed up to a directory on s3.
 You could use this to run short lived processes that work with and persist data to and from S3.
 
@@ -49,6 +55,15 @@ Any environment variable available to the `aws-cli` command can be used. see
 http://docs.aws.amazon.com/cli/latest/userguide/cli-environment.html for more
 information.
 
+### Configuring an endpoint URL
+
+If you are using an S3-compatible service (such as Oracle OCI Object Storage), you may want to set the service's endpoint URL:
+
+```bash
+docker run -d --name my-data-container -e ENDPOINT_URL=... \
+           elementar/s3-volume /data s3://mybucket/someprefix
+```
+
 ### Forcing a sync
 
 A final sync will always be performed on container shutdown. A sync can be
@@ -69,6 +84,14 @@ docker run -d --name my-data-container \
            elementar/s3-volume --force-restore /data s3://mybucket/someprefix
 ```
 
+### Deletion and sync
+
+By default if there are files that are deleted in your local file system, those will be deleted remotely. If you wish to turn this off, set the environment variable `S3_SYNC_FLAGS` to an empty string:
+
+```bash
+docker run -d -e S3_SYNC_FLAGS="" elementar/s3-volume /data s3://mybucket/someprefix
+```
+
 ### Using Compose and named volumes
 
 Most of the time, you will use this image to sync data for another container.

watch

@@ -40,6 +40,12 @@ PROGNAME=$0
 LOCAL=$1
 REMOTE=$2
 
+if [ "$ENDPOINT_URL" ]; then
+  AWS="aws --endpoint-url $ENDPOINT_URL"
+else
+  AWS=aws
+fi
+
 function restore {
   if [ "$(ls -A $LOCAL)" ]; then
     if [[ ${FORCE_RESTORE:false} == 'true' ]]; then
@@ -48,14 +54,14 @@ function restore {
   fi
 
   echo "restoring $REMOTE => $LOCAL"
-  if ! aws s3 sync "$REMOTE" "$LOCAL"; then
+  if ! $AWS s3 sync "$REMOTE" "$LOCAL"; then
     error_exit "restore failed"
   fi
 }
 
 function backup {
   echo "backup $LOCAL => $REMOTE"
-  if ! aws s3 sync "$LOCAL" "$REMOTE" --delete; then
+  if ! $AWS s3 sync "$LOCAL" "$REMOTE" $S3_SYNC_FLAGS; then
     echo "backup failed" 1>&2
     return 1
   fi
@@ -63,7 +69,7 @@ function backup {
 
 function final_backup {
   echo "backup $LOCAL => $REMOTE"
-  while ! aws s3 sync "$LOCAL" "$REMOTE" --delete; do
+  while ! $AWS s3 sync "$LOCAL" "$REMOTE" $S3_SYNC_FLAGS; do
     echo "backup failed, will retry" 1>&2
     sleep 1
   done