Adding PG16 and reworking to minimal Alpine image

Author: BigAlRender

Dockerfile

@@ -1,12 +1,10 @@
-FROM amazon/aws-cli:latest
-ARG POSTGRES_VERSION
-
-RUN yum update -y \
-    && yum install -y gzip
+ARG ALPINE_VERSION
+FROM alpine:${ALPINE_VERSION} as alpine
 
+ARG POSTGRES_VERSION
+RUN apk add --no-cache postgresql$POSTGRES_VERSION-client \
+      aws-cli
 WORKDIR /scripts
-COPY install-pg-dump.sh .
-RUN "/scripts/install-pg-dump.sh"
 
 COPY backup.sh .
-ENTRYPOINT [ "/scripts/backup.sh" ]
+ENTRYPOINT [ "sh", "backup.sh" ]

README.md

@@ -4,6 +4,16 @@ This repo can be used to deploy a [Cron Job](https://render.com/docs/cronjobs) o
 
 Fork this repo and click the button below to deploy.
 
+You'll need to set corresponding OS and Postgres versions:
+
+| `POSTGRES_VERSION` | `ALPINE_VERSION` |
+| :----------------: | :--------------: |
+| 16                 | 3.20             |
+| 15                 | 3.20             |
+| 14                 | 3.20             |
+| 13                 | 3.19             |
+| 12                 | 3.18             |
+
 [![Deploy to Render](https://render.com/images/deploy-to-render-button.svg)](https://render.com/deploy)
 
 See the guide at https://render.com/docs/backup-postgresql-to-s3 for more information.

install-pg-dump.sh

@@ -26,7 +26,11 @@ services:
       - key: AWS_SECRET_ACCESS_KEY
         sync: false
       # Postgres version of your Postgres instance 
-      # For example, 14
+      # For example, 16
       - key: POSTGRES_VERSION
         sync: false
+      # Alpine base-OS version, see README
+      # For example, 3.20
+      - key: ALPINE_VERSION
+        sync: false