feat: add healthcheck feature and update Dockerfile for build process

puppy/Dockerfile

@@ -1,11 +1,13 @@
 #check=skip=JSONArgsRecommended
 FROM debian:12-slim AS builder
 RUN apt-get update && DEBIAN_FRONTEND=noninteracive apt-get install -y \
-    --no-install-recommends cmake g++-mingw-w64-i686-posix make && \
+    --no-install-recommends cmake g++-mingw-w64-i686-posix g++ make && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /build
 COPY . .
+RUN g++ -o healthcheck -I./include ./app/healthcheck.cpp
+
 RUN --mount=type=cache,target=cmake-build cmake -B cmake-build \
     -DCMAKE_CXX_COMPILER=i686-w64-mingw32-g++ && cmake --build cmake-build -j$(nproc) && \
     cp cmake-build/promt-puppy.exe .
@@ -13,21 +15,23 @@ RUN --mount=type=cache,target=cmake-build cmake -B cmake-build \
 FROM debian:12-slim AS runner
 ENV WINEPREFIX=/wineprefix \
     DEBIAN_FRONTEND=noninteracive
-RUN sed -i 's/main/main contrib/' /etc/apt/sources.list.d/debian.sources && \
-    dpkg --add-architecture i386 && apt-get update &&  \
+RUN dpkg --add-architecture i386 && apt-get update &&  \
     apt-get install -y --no-install-recommends \
-    wine wine64 wine32:i386 ca-certificates && \
+    wine wine64 wine32:i386 && \
+    apt-get clean && rm -rf /var/lib/apt/lists/* && \
     wineboot -i && echo "Sleeping for 15 seconds..." && sleep 15 && \
-    apt-get clean && rm -rf /var/lib/apt/lists/*
+    mkdir /tmpfs && ln -sf /tmpfs $WINEPREFIX/drive_c/tmpfs
+
 
 COPY build/ $WINEPREFIX/drive_c
 RUN wine regedit $WINEPREFIX/drive_c/registry.reg && \
-    mkdir /tmpfs && ln -sf /tmpfs $WINEPREFIX/drive_c/tmpfs && \
     echo "Sleeping for 15 seconds" && sleep 15
 
 WORKDIR /app
 
-COPY --from=builder /build/promt-puppy.exe .
+COPY --from=builder /build/promt-puppy.exe /build/healthcheck .
+
+HEALTHCHECK CMD ./healthcheck
 
 EXPOSE 80/tcp
 VOLUME /cache

puppy/app/healthcheck.cpp

@@ -0,0 +1,6 @@
+#include "httplib.hpp"
+
+int main() {
+    auto res = httplib::Client("127.0.0.1", 80).Get("/health");
+    return !(res && res->status == 200);
+}

puppy/app/main.cpp

@@ -4,16 +4,10 @@
 #include <fstream>
 #include <iostream>
 #include <mutex>
-#include <random>
 
 #include "PromtCtlDocument.hpp"
 #include "PromtFTManager.hpp"
 
-template<typename... T>
-static inline void print(T... args) {
-    ((std::cout << args <<  ' '), ...) << std::endl;
-}
-
 static inline std::string random_filename(int len = 65) {
     static const char ASCII_PRINTABLE[] = "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
     std::random_device random_device;
@@ -26,10 +20,15 @@ static inline std::string random_filename(int len = 65) {
     return random_string;
 }
 
-static const char TMP_FOLDER[] = "C:\\tmpfs\\";
+static constexpr std::string TMP_FOLDER = "C:\\tmpfs\\";
 static const auto TMP_IN = TMP_FOLDER + random_filename();
 static const auto TMP_OUT = TMP_FOLDER + random_filename();
 
+template<typename... T>
+static inline void print(T... args) {
+    ((std::cout << args <<  ' '), ...) << std::endl;
+}
+
 static inline auto utf8_to_cp(const char *data) {
     int size = MultiByteToWideChar(CP_UTF8, 0, data, -1, 0, 0);
     auto wstr = new wchar_t[size];
@@ -86,7 +85,7 @@ class WebServer {
             ofs << utf8_to_cp(text.c_str());
         }
         translator.Translate(TMP_IN, TMP_OUT);
-        res.set_content(read_file(TMP_OUT), "text/html");
+        res.set_content(std::move(read_file(TMP_OUT)), "text/html");
     }
 
     void TranslateText(const std::string &text, httplib::Response &res) {
@@ -146,9 +145,13 @@ class WebServer {
         if (!std::filesystem::exists(TMP_FOLDER)) std::filesystem::create_directory(TMP_FOLDER);
 
         m_svr.Post("/translate", [this](const httplib::Request &req, httplib::Response &res) {
-            print("Got request!");
             TranslateHandler(req, res);
         });
+
+        m_svr.Get("/health", [](const httplib::Request &req, httplib::Response &res) {
+            res.set_content("OK", "text/plain");
+            res.status = 200;
+        });
     }
 
     ~WebServer() {