feat: add pgbouncer

docker/pgbouncer/Dockerfile

@@ -0,0 +1,42 @@
+# Based on https://raw.githubusercontent.com/edoburu/docker-pgbouncer/master/Dockerfile
+
+FROM alpine:3.22 AS build
+
+LABEL org.opencontainers.image.source=https://github.com/ahmadk953/poixpixel-discord-bot/tree/main/docker/pgbouncer
+LABEL org.opencontainers.image.description="Docker image for pgbouncer with c-ares support"
+LABEL org.opencontainers.image.licenses=Apache-2.0
+
+ARG PGBOUNCER_VERSION=1.24.1
+ARG C_ARES_VERSION=1.34.5
+
+RUN apk add --no-cache autoconf autoconf-doc automake curl gcc git libc-dev libevent-dev libtool make openssl-dev pandoc pkgconfig
+
+RUN curl -Lo /c-ares.tar.gz https://github.com/c-ares/c-ares/releases/download/v${C_ARES_VERSION}/c-ares-${C_ARES_VERSION}.tar.gz && \
+  tar -xzf /c-ares.tar.gz && mv /c-ares-${C_ARES_VERSION} /c-ares
+
+RUN curl -Lo /pgbouncer.tar.gz https://pgbouncer.github.io/downloads/files/${PGBOUNCER_VERSION}/pgbouncer-${PGBOUNCER_VERSION}.tar.gz && \
+  tar -xzf /pgbouncer.tar.gz && mv /pgbouncer-${PGBOUNCER_VERSION} /pgbouncer
+
+RUN cd /c-ares && ./configure && make && make install
+RUN cd /pgbouncer && ./configure --with-cares && make && make install
+
+FROM alpine:3.22
+
+COPY entrypoint.sh /entrypoint.sh
+
+RUN apk add --no-cache busybox libevent postgresql-client \
+ && mkdir -p /etc/pgbouncer /var/log/pgbouncer /var/run/pgbouncer \
+ && touch /etc/pgbouncer/userlist.txt \
+ && addgroup -S -g 1100 pgbouncer \
+ && adduser  -S -u 1100 -G pgbouncer pgbouncer \
+ && chown -R pgbouncer:pgbouncer /etc/pgbouncer /var/log/pgbouncer /var/run/pgbouncer /entrypoint.sh \
+ && chmod +x /entrypoint.sh
+
+COPY --from=build /usr/local/bin /usr/local/bin
+COPY --from=build /usr/local/lib /usr/local/lib
+COPY --from=build /pgbouncer/etc/pgbouncer.ini /etc/pgbouncer/pgbouncer.ini.example
+COPY --from=build /pgbouncer/etc/userlist.txt /etc/pgbouncer/userlist.txt.example
+EXPOSE 5432
+USER pgbouncer
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["/usr/local/bin/pgbouncer", "/etc/pgbouncer/pgbouncer.ini"]