Add basic simpleid configuration
diff --git a/simpleid/Dockerfile b/simpleid/Dockerfile
new file mode 100644
index 0000000..8c56da1
--- /dev/null
+++ b/simpleid/Dockerfile
@@ -0,0 +1,17 @@
+FROM php:8.2-fpm-alpine
+
+RUN \
+ apk add gmp gmp-dev && \
+ docker-php-ext-configure bcmath && \
+ docker-php-ext-install -j$(nproc) bcmath && \
+ docker-php-ext-configure gmp && \
+ docker-php-ext-install -j$(nproc) gmp && \
+ docker-php-ext-enable opcache && \
+ apk del gmp-dev
+
+RUN mv "${PHP_INI_DIR}/php.ini-production" "${PHP_INI_DIR}/php.ini"
+
+COPY simpleid/Dockerfile.entrypoint /simpleid-entrypoint
+RUN chmod 544 /simpleid-entrypoint
+
+ENTRYPOINT ["/bin/sh", "/simpleid-entrypoint"]