New Dockerfile to work with glibc.

.dockerignore

@@ -1 +1,2 @@
 target/
+.git

Dockerfile

@@ -1,12 +1,35 @@
-# Yoinked from:
+# Builder image
-# https://github.com/emk/rust-musl-builder/blob/master/examples/using-diesel/Dockerfile
+FROM bougyman/voidlinux:glibc as builder
-FROM ekidd/rust-musl-builder:stable AS builder
+RUN xbps-install -Sy base-devel libressl-devel wget gnupg rustup
-ADD --chown=rust:rust . ./
+RUN rustup-init -qy
-RUN cargo build --release
 
-FROM alpine:latest
+# Install tini for signal processing and zombie killing
-RUN apk --no-cache add ca-certificates
+ENV TINI_VERSION v0.18.0
+ENV TINI_SIGN_KEY 595E85A6B1B4779EA4DAAEC70B588DFF0527A9B7
+RUN set -eux; \
+  wget -O /usr/local/bin/tini "https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini"; \
+  wget -O /usr/local/bin/tini.asc "https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini.asc"; \
+  export GNUPGHOME="$(mktemp -d)"; \
+  gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$TINI_SIGN_KEY"; \
+  gpg --batch --verify /usr/local/bin/tini.asc /usr/local/bin/tini; \
+  command -v gpgconf && gpgconf --kill all || :; \
+  rm -r "$GNUPGHOME" /usr/local/bin/tini.asc; \
+  chmod +x /usr/local/bin/tini; \
+	tini --version
+
+# Build dicebot
+RUN mkdir -p /root/src
+WORKDIR /root/src
+ADD . ./
+RUN . /root/.cargo/env && cargo build --release
+
+# Final image
+FROM bougyman/voidlinux:latest
+RUN xbps-install -Sy ca-certificates libstdc++ libressl
 COPY --from=builder \
-    /home/rust/src/target/x86_64-unknown-linux-musl/release/dicebot \
+    /root/src/target/release/dicebot \
     /usr/local/bin/
-CMD /usr/local/bin/dicebot /config/dicebot-config.toml
+COPY --from=builder \
+    /usr/local/bin/tini \
+    /usr/local/bin/
+ENTRYPOINT [ "/usr/local/bin/tini", "-v", "--", "/usr/local/bin/dicebot", "/config/dicebot-config.toml" ]