3proxy updated up to 0.9.3 (#1)

Dockerfile

@@ -1,46 +1,48 @@
 # Image page: <https://hub.docker.com/_/alpine>
-FROM alpine:latest as builder
+FROM gcc:9.3 as builder
 
-# e.g.: `docker build --build-arg "VERSION=0.8.13" .`
-ARG VERSION="0.8.13"
+# e.g.: `docker build --build-arg "VERSION=0.9.3" .`
+ARG VERSION="0.9.3"
 
+# Fetch 3proxy sources
 RUN set -x \
-    && apk add --no-cache \
-        linux-headers \
-        build-base \
-        git \
-    && git clone --branch ${VERSION} https://github.com/z3APA3A/3proxy.git /tmp/3proxy \
-    && cd /tmp/3proxy \
-    && echo '#define ANONYMOUS 1' >> /tmp/3proxy/src/3proxy.h \
+    && git clone --branch "${VERSION}" https://github.com/z3APA3A/3proxy.git /tmp/3proxy
+
+WORKDIR /tmp/3proxy
+
+# Patch sources
+RUN set -x \
+    && echo '#define ANONYMOUS 1' >> ./src/3proxy.h \
+    # proxy.c source: <https://github.com/z3APA3A/3proxy/blob/0.9.3/src/proxy.c>
     && sed -i 's~\(<\/head>\)~<style>html,body{background-color:#222526;color:#fff;font-family:sans-serif;\
 text-align:center;display:flex;flex-direction:column;justify-content:center}h1,h2{margin-bottom:0;font-size:2.5em}\
 h2::before{content:'"'"'Proxy error'"'"';display:block;font-size:0.4em;color:#bbb;font-weight:100}\
-h3,p{color:#bbb}</style>\1~' /tmp/3proxy/src/proxy.c \
-    && cat ./src/proxy.c | grep '</head>' \
-    && make -f Makefile.Linux
-
-FROM alpine:latest
-
-# e.g.: `docker build --build-arg "BUILD_DATE=`date -u +'%Y-%m-%dT%H:%M:%SZ'`" .`
-ARG BUILD_DATE
-
-LABEL \
-    org.label-schema.name="3proxy" \
-    org.label-schema.description="Tiny free proxy server" \
-    org.label-schema.url="https://github.com/tarampampam/3proxy-docker" \
-    org.label-schema.vcs-url="https://github.com/tarampampam/3proxy-docker" \
-    org.label-schema.docker.cmd="docker run --rm -d -p \"3128:3128/tcp\" -p \"1080:1080/tcp\" this_image" \
-    org.label-schema.vendor="tarampampam" \
-    org.label-schema.build-date="$BUILD_DATE" \
-    org.label-schema.license="WTFPL" \
-    org.label-schema.schema-version="1.0"
-
-COPY 3proxy.cfg /etc/3proxy/3proxy.cfg
-COPY docker-entrypoint.sh /docker-entrypoint.sh
-COPY --from=builder /tmp/3proxy/src/3proxy /usr/bin/3proxy
+h3,p{color:#bbb}</style>\1~' ./src/proxy.c \
+    && cat ./src/proxy.c | grep '</head>'
 
+# And compile
+RUN set -x \
+    && echo "" >> ./Makefile.Linux \
+    && echo "PLUGINS = StringsPlugin TrafficPlugin PCREPlugin TransparentPlugin SSLPlugin" >> ./Makefile.Linux \
+    && echo "LIBS = -l:libcrypto.a -l:libssl.a -ldl" >> ./Makefile.Linux \
+    && make -f Makefile.Linux \
+    && strip ./bin/3proxy \
+    && strip ./bin/StringsPlugin.ld.so \
+    && strip ./bin/TrafficPlugin.ld.so \
+    && strip ./bin/PCREPlugin.ld.so \
+    && strip ./bin/TransparentPlugin.ld.so \
+    && strip ./bin/SSLPlugin.ld.so
+
+# Prepare filesystem for 3proxy running
+FROM busybox:1.32-glibc as buffer
+
+# Copy binaries
+COPY --from=builder /lib/x86_64-linux-gnu/libdl.so.* /lib/
+COPY --from=builder /tmp/3proxy/bin/3proxy /bin/
+COPY --from=builder /tmp/3proxy/bin/*.ld.so /usr/local/3proxy/libexec/
+
+# Create unprivileged user
 RUN set -x \
-    # Unprivileged user creation <https://stackoverflow.com/a/55757473/12429735RUN>
     && adduser \
         --disabled-password \
         --gecos "" \
@@ -48,12 +50,38 @@ RUN set -x \
         --shell /sbin/nologin \
         --no-create-home \
         --uid 10001 \
-        3proxy \
-    && chown 3proxy:3proxy -R /etc/3proxy
+        3proxy
+
+# Prepare files and directories
+RUN set -x \
+    && chown -R 10001:10001 /usr/local/3proxy \
+    && chmod -R 550 /usr/local/3proxy \
+    && chmod -R 555 /usr/local/3proxy/libexec \
+    && chown -R root /usr/local/3proxy/libexec \
+    && mkdir /etc/3proxy \
+    && chown -R 10001:10001 /etc/3proxy
+
+# Copy our config and entrypoint script
+COPY 3proxy.cfg /etc/3proxy/3proxy.cfg
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+
+# Split all buffered layers into one
+FROM scratch
+
+LABEL \
+    org.opencontainers.image.title="3proxy" \
+    org.opencontainers.image.description="Tiny free proxy server" \
+    org.opencontainers.image.url="https://github.com/tarampampam/3proxy-docker" \
+    org.opencontainers.image.source="https://github.com/tarampampam/3proxy-docker" \
+    org.opencontainers.image.vendor="Tarampampam" \
+    org.opencontainers.image.licenses="WTFPL"
+
+# Import from builder
+COPY --from=buffer / /
 
 # Use an unprivileged user
 USER 3proxy:3proxy
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
 
-CMD ["/usr/bin/3proxy", "/etc/3proxy/3proxy.cfg"]
+CMD ["/bin/3proxy", "/etc/3proxy/3proxy.cfg"]