fix: fixes to use alpine

.github/workflows/docker-image.yml

@@ -13,7 +13,7 @@ jobs:
   bld-and-push:
     strategy:
       matrix:
-        version: ['13-alpine', '14-alpine', '15-alpine', '16-alpine']
+        version: ['13', '14', '15', '16']
     runs-on: ubuntu-latest
     steps:
     - name: Checkout

Dockerfile

@@ -1,12 +1,6 @@
-ARG POSTGRES_VERSION=12.1
-FROM postgres:${POSTGRES_VERSION}-bullseye
-LABEL org.opencontainers.image.authors="[email protected]"
-
-RUN \
-apt-get update && \
-apt-get install -y cron  && \
-apt-get clean && \
-rm -rf /var/lib/apt/lists/*
+ARG POSTGRES_VERSION=16
+FROM postgres:${POSTGRES_VERSION}-alpine
+LABEL org.opencontainers.image.authors="[email protected]"
 
 EXPOSE 5432
 ENV PGDATA="/data"
@@ -23,16 +17,11 @@ USER root
 RUN \
 chmod 755 dump.sh && \
 chmod 755 entrypoint.sh && \
-chmod gu+rw /var/run && \
-chmod gu+s /usr/sbin/cron && \
 mkdir ${PGDUMP} && \
 chown ${PGUSER}:${PGUSER} ${PGDUMP} && \
 mkdir ${PGDATA} && \
 chown ${PGUSER}:${PGUSER} ${PGDATA}
 
 VOLUME [ "${PGDUMP}", "${PGDATA}" ]
-
-USER ${PGUSER}
-
 ENTRYPOINT ["bash", "/entrypoint.sh"]
 CMD ["dump-cron"]

entrypoint.sh

@@ -2,6 +2,9 @@
 # entrypoint.sh
 set -e
 
+crond
+su - ${PGUSER}
+
 if [[ -z $COMMAND ]];
 then
    COMMAND=${1:-dump-cron}
@@ -92,8 +95,6 @@ elif [[ "${COMMAND}" == 'dump-cron' ]]; then
     fi
 
     echo -e "$CRON_ENV\n$CRON_SCHEDULE /dump.sh > $LOGFIFO 2>&1" | crontab -
-    # crontab -l
-    cron
 
     if [[ "${RUN_DOUBLE}" == "false" ]];
     then