diff --git a/folder-backup-s3/Dockerfile b/folder-backup-s3/Dockerfile
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+++ b/folder-backup-s3/Dockerfile
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+FROM alpine:latest
+LABEL maintainer="Zhong Huiwen <zhonghuiwen@gmail.com>"
+
+ADD install.sh install.sh
+RUN sh install.sh && rm install.sh
+
+ENV DATA_PATH **None**
+ENV S3_ACCESS_KEY_ID **None**
+ENV S3_SECRET_ACCESS_KEY **None**
+ENV S3_BUCKET **None**
+ENV S3_REGION us-west-1
+ENV S3_ENDPOINT **None**
+ENV S3_S3V4 no
+ENV S3_PREFIX 'folder-backup'
+ENV SCHEDULE **None**
+
+ADD run.sh run.sh
+ADD backup.sh backup.sh
+
+CMD ["sh", "run.sh"]
diff --git a/folder-backup-s3/README.md b/folder-backup-s3/README.md
new file mode 100644
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+++ b/folder-backup-s3/README.md
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+# folder-backup-s3
+
+Backup a folder in a docker container to S3
+
+## Basic usuage
+
+```sh
+$ docker run -e S3_ACCESS_KEY_ID=key -e S3_SECRET_ACCESS_KEY=secret -e S3_BUCKET=my-bucket -e S3_PREFIX=backup -e MYSQL_USER=user -e MYSQL_PASSWORD=password -e MYSQL_HOST=localhost gameboy1990/folder-backup-s3
+```
+
+## Environment variables
+
+- `DATA_PATH` your data folder to backup *required*
+- `S3_ACCESS_KEY_ID` your AWS access key *required*
+- `S3_SECRET_ACCESS_KEY` your AWS secret key *required*
+- `S3_BUCKET` your AWS S3 bucket path *required*
+- `S3_PREFIX` path prefix in your bucket (default: 'folder-backup')
+- `S3_REGION` the AWS S3 bucket region (default: us-west-1)
+- `S3_ENDPOINT` the AWS Endpoint URL, for S3 Compliant APIs such as [minio](https://minio.io) (default: none)
+- `S3_S3V4` set to `yes` to enable AWS Signature Version 4, required for [minio](https://minio.io) servers (default: no)
+- `SCHEDULE` backup schedule time, see explainatons below
+- `DELETE_OLDER_THAN` delete files older than e.g. "30 days" reference arguments from [date](https://ss64.com/bash/date.html)
\ No newline at end of file
diff --git a/folder-backup-s3/backup.sh b/folder-backup-s3/backup.sh
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+++ b/folder-backup-s3/backup.sh
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+#! /bin/sh
+
+set -e
+
+if [ "${DATA_PATH}" == "**None**" ]; then
+  echo "Warning: You did not set the DATA_PATH environment variable."
+fi
+
+if [ "${S3_ACCESS_KEY_ID}" == "**None**" ]; then
+  echo "Warning: You did not set the S3_ACCESS_KEY_ID environment variable."
+fi
+
+if [ "${S3_SECRET_ACCESS_KEY}" == "**None**" ]; then
+  echo "Warning: You did not set the S3_SECRET_ACCESS_KEY environment variable."
+fi
+
+if [ "${S3_BUCKET}" == "**None**" ]; then
+  echo "You need to set the S3_BUCKET environment variable."
+  exit 1
+fi
+
+if [ "${S3_IAMROLE}" != "true" ]; then
+  # env vars needed for aws tools - only if an IAM role is not used
+  export AWS_ACCESS_KEY_ID=$S3_ACCESS_KEY_ID
+  export AWS_SECRET_ACCESS_KEY=$S3_SECRET_ACCESS_KEY
+  export AWS_DEFAULT_REGION=$S3_REGION
+fi
+
+DUMP_START_TIME=$(date +"%Y-%m-%dT%H%M%SZ")
+
+copy_s3 () {
+  SRC_FILE=$1
+  DEST_FILE=$2
+
+  if [ "${S3_ENDPOINT}" == "**None**" ]; then
+    AWS_ARGS=""
+  else
+    AWS_ARGS="--endpoint-url ${S3_ENDPOINT}"
+  fi
+
+  echo "Uploading ${DEST_FILE} on S3..."
+
+  cat $SRC_FILE | aws $AWS_ARGS s3 cp - s3://$S3_BUCKET/$S3_PREFIX/$DEST_FILE
+
+  if [ $? != 0 ]; then
+    >&2 echo "Error uploading ${DEST_FILE} on S3"
+  fi
+
+  rm $SRC_FILE
+}
+deleteOld_s3 () {
+  if [ "${S3_ENDPOINT}" == "**None**" ]; then
+    AWS_ARGS=""
+  else
+    AWS_ARGS="--endpoint-url ${S3_ENDPOINT}"
+  fi
+
+  aws $AWS_ARGS s3 ls s3://$S3_BUCKET/$S3_PREFIX/ | while read -r line;
+
+  do
+    createDate=`echo $line|awk {'print $1" "$2'}`
+    createDate=`date -d"$createDate" +%s`
+    olderThan=`date -d"-${DELETE_OLDER_THAN}" +%s`
+    if [[ $createDate -lt $olderThan ]]
+      then 
+        fileName=`echo $line|awk {'print $4'}`
+        echo $fileName
+        if [[ $fileName != "" ]]
+          then
+            aws $AWS_ARGS s3 rm s3://$S3_BUCKET/$S3_PREFIX/$fileName
+            echo "Deleted ${fileName} on S3"
+        fi
+    fi
+  done;
+}
+shouldDeleteOld_s3() {
+ if [ $? == 0 ]; then
+    if [ "${DELETE_OLDER_THAN}" != "**None**" ]; then
+      deleteOld_s3 
+    fi
+  else
+    >&2 echo "Error deleting s3 files older than ${DELETE_OLDER_THAN}"
+  fi 
+}
+
+echo "Creating folder backup for ${DATA_PATH}..."
+
+DUMP_FILE=/tmp/${DUMP_START_TIME}.backup.tar.gz
+rm -rf /tmp/*.backup.tar.gz
+tar -zcf $DUMP_FILE -C $DATA_PATH .
+
+if [ $? == 0 ]; then
+  S3_FILE="${DUMP_START_TIME}.backup.tar.gz"
+
+  copy_s3 $DUMP_FILE $S3_FILE
+else
+  >&2 echo "Error creating dump of folder ${DATA_PATH}"
+fi
+
+shouldDeleteOld_s3
+
+echo "Folder backup finished"
diff --git a/folder-backup-s3/install.sh b/folder-backup-s3/install.sh
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+++ b/folder-backup-s3/install.sh
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+#! /bin/sh
+
+# exit if a command fails
+set -e
+
+
+apk update
+
+# install s3 tools
+apk add python py-pip
+pip install awscli
+apk del py-pip
+
+# install go-cron
+apk add curl
+curl -L --insecure https://github.com/odise/go-cron/releases/download/v0.0.6/go-cron-linux.gz | zcat > /usr/local/bin/go-cron
+chmod u+x /usr/local/bin/go-cron
+apk del curl
+
+# install coreutils for date -d
+apk add --update coreutils
+
+# cleanup
+rm -rf /var/cache/apk/*
diff --git a/folder-backup-s3/run.sh b/folder-backup-s3/run.sh
new file mode 100644
index 0000000..e3fb3c8
--- /dev/null
+++ b/folder-backup-s3/run.sh
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+#! /bin/sh
+
+set -e
+
+if [ "${S3_S3V4}" = "yes" ]; then
+    aws configure set default.s3.signature_version s3v4
+fi
+
+if [ "${SCHEDULE}" = "**None**" ]; then
+  sh backup.sh
+else
+  exec go-cron "$SCHEDULE" /bin/sh backup.sh
+fi