WIP

Dockerfile

@@ -14,6 +14,23 @@ RUN tar -xf pg16.tar.gz
 RUN cd postgresql* && ./configure --prefix=/postgres/16 && make world-bin && make install
 
 FROM ubuntu:noble
-RUN  apt update && apt install -y libicu74 libreadline8t64 curl wget nano && rm -rf /var/lib/apt/lists/*
+RUN  apt update && apt install -y \
+    libicu74 \
+    libreadline8t64 \
+    curl \
+    wget \
+    nano \
+    locales \
+    && rm -rf /var/lib/apt/lists/*
+RUN localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+ENV LANG=en_US.utf8
+
+ENV POSTGRES_USER=postgres
+
 COPY --from=build17 /postgres/17 /postgres/17
 COPY --from=build16 /postgres/16 /postgres/16
+
+COPY migrate.sh /migrate.sh
+RUN chmod +x migrate.sh
+
+CMD ["/migrate.sh"]

README.md

@@ -1,6 +1,13 @@
 # Docker migration helper
 
 ## Test
+Create an outdated database
+```bash
+mkdir test-db
+docker run --rm --name testdb -u 1000 -e POSTGRES_PASSWORD=password -v $(pwd)/test-db:/var/lib/postgresql/data -it postgres:16
 ```
-docker run --rm --name testdb -e POSTGRES_PASSWORD=password -v $(pwd)/test-db:/var/lib/postgresql/data -it postgres:16
+
+Perform the migration:
+```bash
+./build.sh && docker run -u 1000 -v $(pwd)/test-db:/db --rm -it pierre42100/postgresmig:16to17
 ```

migrate.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+echo Migrate PostgreSQL version
+
+DB_PATH=/db
+OLD_DB_PATH=/tmp/old_db
+
+# Run database on a COPY of the database
+cp -r "$DB_PATH" "$OLD_DB_PATH"
+
+# Start the database in the background
+/postgres/16/bin/postgres -D /tmp/old_db/ &
+
+while true;
+do
+    echo Waiting for database...
+    if echo "\q" | /postgres/16/bin/psql  -U "$POSTGRES_USER";
+    then
+        break
+    fi
+done
+
+# Perform dump
+
+
+# Stop database
+#pkill postgres
+
+bash