Initial proof of concept

Signed-off-by: eternal-flame-AD <yume@yumechi.jp>

docker/Dockerfile

@@ -1,12 +1,87 @@
-FROM amd64/debian:stable-slim
-ENV GOTIFY_SERVER_PORT="80"
+ARG DEBIAN=stable
+
+# --- JS Builder ---
+
+FROM debian:${DEBIAN} AS js-builder
+
+ARG BUILD_JS=1
+ARG NODE_OPTIONS
+ENV DEBIAN_FRONTEND=noninteractive
+
+COPY . /src/gotify
+
+RUN if [ "$BUILD_JS" = "1" ]; then \
+    apt-get update && apt-get install -yq --no-install-recommends \
+    curl \
+    git \
+    nodejs \
+    npm && \
+    \
+    NODE_OPTIONS_DEFAULT=$(if node --help | grep -q -- "--openssl-legacy-provider"; then echo --openssl-legacy-provider; fi) && \
+    export NODE_OPTIONS=${NODE_OPTIONS:-$NODE_OPTIONS_DEFAULT} && \
+    echo "Using NODE_OPTIONS=$NODE_OPTIONS" && \
+    cd /src/gotify/ui && \
+    \
+    npm install -g yarn && \
+    \
+    yarn install && \
+    yarn build && \
+    \
+    cp -r /src/gotify/ui/build /target; \
+    \
+    else \
+    mkdir -p /target; \
+    fi
+
+# --- Go Builder ---
+
+FROM debian:${DEBIAN} AS builder
+
+ARG BUILD_JS=1
+ARG GO_BUILD_FLAGS=-mod=readonly -a -installsuffix cgo
+ENV DEBIAN_FRONTEND=noninteractive
+
+ADD https://raw.githubusercontent.com/travis-ci/gimme/master/gimme /usr/local/bin/gimme 
+
+RUN chmod +x /usr/local/bin/gimme # compatiblity
+
+RUN apt-get update && apt-get install -yq --no-install-recommends \
+    build-essential \
+    ca-certificates \
+    curl \
+    git
+
+COPY . /src/gotify
+COPY --from=js-builder /target /ui-build
+
+RUN if [ "$BUILD_JS" = "1" ]; then \
+    cp -r --update /ui-build /src/gotify/ui/build; \
+    fi
+
+RUN cd /src/gotify && \
+    read -r GIMME_GO_VERSION < GO_VERSION && \
+    echo "Using Go version: $GIMME_GO_VERSION" && \
+    gimme ${GIMME_GO_VERSION} && \
+    mkdir -p /target/app && \
+    bash -c ". ~/.gimme/envs/go${GIMME_GO_VERSION}.env && go build ${GO_BUILD_FLAGS} -o /target/app/gotify-app"
+
+FROM debian:${DEBIAN}-slim
+
+# build-time configurable port
+ARG GOTIFY_SERVER_EXPOSE=80
+ENV GOTIFY_SERVER_PORT=$GOTIFY_SERVER_EXPOSE
+
 WORKDIR /app
-RUN export DEBIAN_FRONTEND=noninteractive && apt-get update && apt-get install -yq \
-  tzdata \
-  curl \
-  ca-certificates \
-  && rm -rf /var/lib/apt/lists/*
-ADD gotify-app /app/
+
+RUN export DEBIAN_FRONTEND=noninteractive && apt-get update && apt-get install -yq --no-install-recommends \
+    tzdata \
+    curl \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
 HEALTHCHECK --interval=30s --timeout=5s --start-period=5s CMD curl --fail http://localhost:$GOTIFY_SERVER_PORT/health || exit 1
-EXPOSE 80
+EXPOSE $GOTIFY_SERVER_EXPOSE
+
+COPY --from=builder /target /
+
 ENTRYPOINT ["./gotify-app"]