Add alpine base option

Dockerfile.alpine

@@ -0,0 +1,24 @@
+FROM ekidd/rust-musl-builder AS builder
+
+RUN USER=rust cargo init
+
+COPY ./Cargo.toml ./Cargo.toml
+COPY ./Cargo.lock ./Cargo.lock
+RUN cargo build --release
+
+# Remove temp src
+RUN rm src/*.rs
+COPY ./src ./src
+# Fix permissions on source
+RUN sudo chown -R rust:rust /home/rust/src/src
+
+RUN touch ./src/main.rs
+RUN cargo build --release
+
+FROM alpine:latest
+RUN apk --no-cache add ca-certificates
+COPY --from=builder \
+    /home/rust/src/target/x86_64-unknown-linux-musl/release/bitwarden_rs_ldap \
+    /usr/local/bin/
+
+CMD /usr/local/bin/bitwarden_rs_ldap

docker-compose.yml

@@ -1,9 +1,12 @@
 version: '3'
 services:
   ldap_sync:
-    build: .
+    build:
+      context: .
+      # dockerfile: Dockerfile.alpine
     volumes:
       - ./example.config.toml:/usr/src/bitwarden_rs_ldap/config.toml:ro
+      # - ./example.config.toml:/config.toml:ro
     restart: always
 
   bitwarden: