Removed config file; switched to alpine build & O3

Dockerfile

@@ -2,7 +2,7 @@
 ARG THTTPD_VER=2.29
 ARG DI_VER=1.2.5
 
-FROM ubuntu:latest AS builder
+FROM alpine:3 AS builder
 
 
 # =====BUILD BINARIES=====
@@ -10,26 +10,32 @@ WORKDIR /usr/src
 ARG THTTPD_VER
 ARG DI_VER
 
-# Install dependencies & build thttpd
-RUN apt update && \
-    apt install -y --no-install-recommends \
-        curl \
-        ca-certificates \
-        hugo \
-        musl-dev \
-        musl-tools \
-        build-essential && \
-    curl -sSL "https://www.acme.com/software/thttpd/thttpd-$THTTPD_VER.tar.gz" | \
+# Install build dependencies
+# bash: required for dumb-init's Makefile
+# gcc, musl-dev: compilation
+# curl: downloading the tarballs
+# hugo: generating the static files
+RUN apk add --update --no-cache \
+    bash \
+    make \
+    gcc \
+    curl \
+    hugo \
+    musl-dev
+
+# Build thttpd
+RUN curl -sSL "https://www.acme.com/software/thttpd/thttpd-$THTTPD_VER.tar.gz" | \
         tar xzf - && \
     cd "thttpd-$THTTPD_VER" && \
-    CC="musl-gcc -static" ./configure && \
-    make -j$(nproc)
+    ./configure && \
+    make CCOPT="-O3 -s -static" -j$(nproc)
 
 # Build dumb-init
+# dumb-init's Makefile already specifies static build flags, so we don't have to specify them
 RUN curl -sSL "https://github.com/Yelp/dumb-init/archive/refs/tags/v$DI_VER.tar.gz" | \
     tar xzf - && \
     cd "dumb-init-$DI_VER" && \
-    CC="musl-gcc -static" make build
+    make build
 
 
 # =====BUILD BLOG=====
@@ -52,10 +58,9 @@ ARG DI_VER
 COPY --from=builder /usr/src/thttpd-$THTTPD_VER/thttpd /bin/thttpd
 COPY --from=builder /usr/src/dumb-init-$DI_VER/dumb-init /bin/dumb-init
 COPY --from=builder /usr/src/app/public /static
-COPY thttpd.conf /etc/thttpd.conf
 
 # A static file server doesn't need root
 USER 82:82
 
 ENTRYPOINT [ "/bin/dumb-init", "--" ]
-CMD [  "/bin/thttpd", "-D", "-C", "/etc/thttpd.conf" ]
+CMD [ "/bin/thttpd", "-D", "-d", "/static", "-p", "8080" ]

thttpd.conf

@@ -1,2 +0,0 @@
-port=8080
-dir=/static