Refactoring of Dockerfile

docker/Dockerfile

@@ -39,7 +39,7 @@ ARG DEBIAN_FRONTEND=noninteractive
 ENV VERSION="v1.2.3"
 ENV BACKUP_CRON_EXPRESSION=""
 ENV GNUPGHOME="/tmp/gnupg"
-ARG WORKDIR="/app"
+ARG WORKDIR="/config"
 ARG BACKUPDIR="/backup"
 ARG BACKUP_TMP_DIR="/tmp/backup"
 ARG BACKUP_CRON="/etc/cron.d/backup_cron"
@@ -74,18 +74,14 @@ RUN ln -s /usr/local/bin/pg-bkup /usr/local/bin/bkup
 ADD docker/supervisord.conf /etc/supervisor/supervisord.conf
 
 WORKDIR $WORKDIR
-# Create backup shell script
-COPY <<EOF /usr/local/bin/backup
-#!/bin/sh
-# shellcheck disable=SC2068
-/usr/local/bin/pg-bkup backup $@
-EOF
-# Create restore shell script
-COPY <<EOF /usr/local/bin/restore
-#!/bin/sh
-# shellcheck disable=SC2068
-/usr/local/bin/pg-bkup restore $@
-EOF
-RUN chmod +x /usr/local/bin/backup && \
+# Create the backup script and make it executable
+RUN echo '#!/bin/sh\n/usr/local/bin/pg-bkup backup "$@"' > /usr/local/bin/backup && \
+    chmod +x /usr/local/bin/backup
+
+# Create the restore script and make it executable
+RUN echo '#!/bin/sh\n/usr/local/bin/pg-bkup restore "$@"' > /usr/local/bin/restore && \
     chmod +x /usr/local/bin/restore
+# Create the migrate script and make it executable
+RUN echo '#!/bin/sh\n/usr/local/bin/pg-bkup migrate "$@"' > /usr/local/bin/migrate && \
+    chmod +x /usr/local/bin/migrate
 ENTRYPOINT ["/usr/local/bin/pg-bkup"]