Added .pass file build logic

Dockerfile

@@ -17,7 +17,7 @@ ADD docker-entrypoint.sh /docker-entrypoint.sh
 RUN chmod +x /docker-entrypoint.sh
 
 # Volumes declaration
-VOLUME ["/backup", "/scripts"]
+VOLUME ["/backup"]
 
 # Start the container process
 ENTRYPOINT ["/docker-entrypoint.sh"]

docker-entrypoint.sh

@@ -1,4 +1,31 @@
 #!/bin/sh
 
-# Execute cron with parameters
+# Logic for Password file required
+#  If PASSWORD_SECRET env var is defined, search for the /run/secrets/${PASSWORD_SECRET} and read the content
+#  If PASSWORD_SECRET is not defined, use PASSWORD env variable
+# The idea, as specified in the software:
+#   create a file $HOME/.pgpass containing a line like this 
+#           hostname:*:*:dbuser:dbpass
+# replace hostname with the value of DBHOST and postgres with
+# the value of USERNAME
+
+PASSPHRASE=""
+if [ "${PASSWORD_SECRET}" ]; then
+    if [ -f "/run/secrets/${PASSWORD_SECRET}" ]; then
+        PASSPHRASE = $(cat /run/secrets/${PASSWORD_SECRET})
+    else
+        echo "ERROR: Secret file not found in /run/secrets/${PASSWORD_SECRET}"
+        echo "Please verify your docker secrets configuration."
+        exit 1
+    fi
+else
+    PASSPHRASE = ${PASSWORD}
+fi
+
+# Create the file
+cat <<-EOF > ${HOME}/.pgpass
+${DBHOST}:*:*:${USERNAME}:${PASSPHRASE}
+EOF
+
+# Execute cron with parameters (autopostgresql script is under /etc/cron.daily)
 exec cron -f -l ${LOG_LEVEL:-8}