diff --git a/Dockerfile b/Dockerfile
index 89fffc6..50168a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,6 @@ FROM alpine:3.5
 #		libpng
 
 # Dev & build
-ARG GFLAGS_VERSION=v2.2.0
 ARG GUETZLI_VERSION=v1.0.1
 RUN \
 	apk add --no-cache --virtual .build-deps \
@@ -16,25 +15,12 @@ RUN \
 		coreutils \
 		cmake \
 		&&\
-\
-	git clone "https://github.com/gflags/gflags.git" /var/tmp/gflags &&\
-	(cd /var/tmp/gflags &&\
-		git checkout "${GFLAGS_VERSION}" &&\
-		mkdir build &&\
-		cd build &&\
-		cmake .. &&\
-		make -j$(nproc) all install DESTDIR="/opt/build" \
-	) &&\
 \
 	git clone "https://github.com/google/guetzli.git" /var/tmp/guetzli &&\
 	(cd /var/tmp/guetzli &&\
 		git checkout "${GUETZLI_VERSION}" &&\
 		make -j$(nproc) config=release \
 			TARGETDIR=/usr/local/bin \
-			LDFLAGS="-L/opt/build/usr/local/lib -static" \
-			CXXFLAGS="-I/opt/build/usr/local/include" \
-			CFLAGS="-I/opt/build/usr/local/include" \
-			CPPFLAGS="-I/opt/build/usr/local/include" \
 	) &&\
 \
 	apk del --no-cache .build-deps &&\