Update Dockerfile base images

Author: kpcyrd

Dockerfile

@@ -1,11 +1,11 @@
-FROM rust:alpine3.12
+FROM rust:alpine3.19
 RUN apk add build-base libpcap-dev libseccomp-dev
 WORKDIR /usr/src/sniffglue
 COPY . .
 RUN RUSTFLAGS="-C target-feature=-crt-static" cargo build --release --verbose \
     && strip target/release/sniffglue
 
-FROM alpine:3.12
+FROM alpine:3.19
 RUN apk add libgcc libpcap libseccomp
 COPY docs/sniffglue.docker.conf /etc/sniffglue.conf
 COPY --from=0 /usr/src/sniffglue/target/release/sniffglue /usr/local/bin/sniffglue