Switched to hyper-minimal Docker image

Dockerfile

@@ -1,24 +1,38 @@
 # Global build argument
 ARG THTTPD_VER=2.29
+ARG DI_VER=1.2.5
 
-FROM alpine:latest AS builder
+FROM ubuntu:latest AS builder
 
 
-# =====BUILD thttpd=====
+# =====BUILD BINARIES=====
 WORKDIR /usr/src
 ARG THTTPD_VER
+ARG DI_VER
 
 # Install dependencies & build thttpd
-RUN apk update && \
-    apk add --no-cache curl hugo build-base && \
+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-$THTTPD_VER.tar.gz" | \
         tar xzf - && \
     cd "thttpd-$THTTPD_VER" && \
-    CFLAGS="-O3 -static" ./configure && \
+    CC="musl-gcc -static" ./configure && \
     make -j$(nproc)
 
+# Build dumb-init
+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
 
-# =====BUILD THE BLOG=====
+
+# =====BUILD BLOG=====
 WORKDIR /usr/src/app
 
 # Copy site files for building
@@ -29,22 +43,18 @@ RUN hugo --minify
 
 
 # ====CREATE RELEASE IMAGE====
-FROM alpine:latest
+FROM scratch
 ARG THTTPD_VER
-
-# Install dumb-init & create a non-root user
-RUN apk update && \
-    apk add --no-cache dumb-init
-    # addgroup -g 82 -S www-data && \
-    # adduser -u 82 -D -S -G www-data www-data
+ARG DI_VER
 
 # Copy over binary & static files
-COPY --from=builder /usr/src/thttpd-$THTTPD_VER/thttpd /usr/local/bin/thttpd
-COPY --from=builder /usr/src/app/public /var/www/html
+COPY --from=builder /usr/src/thttpd-$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 [ "dumb-init", "--" ]
-CMD [ "/usr/local/bin/thttpd", "-D", "-C", "/etc/thttpd.conf" ]
+ENTRYPOINT [ "/bin/dumb-init", "--" ]
+CMD [  "/bin/thttpd", "-D", "-C", "/etc/thttpd.conf" ]

thttpd.conf

@@ -1,2 +1,2 @@
 port=8080
-dir=/var/www/html
+dir=/static