build(docker): Docker mozjpeg variant for imagor

Author: cshum

Dockerfile

@@ -72,7 +72,11 @@ RUN go mod download
 
 COPY . .
 
-RUN go build -o ${GOPATH}/bin/imagor ./cmd/imagor/main.go
+RUN if [ "$ENABLE_MOZJPEG" = "true" ]; then \
+    CGO_LDFLAGS="-L/usr/local/lib -ljpeg" go build -o ${GOPATH}/bin/imagor ./cmd/imagor/main.go; \
+  else \
+    go build -o ${GOPATH}/bin/imagor ./cmd/imagor/main.go; \
+  fi
 
 FROM debian:trixie-slim as runtime
 LABEL maintainer="[email protected]"