diff --git a/Dockerfile b/Dockerfile
index 3c14463..ea2c68b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,9 @@
-FROM ubuntu:18-04-slim
+FROM ubuntu:18.04
 
-ARG MOZJPEG_VERSION=3.3.1
+ENV LC_ALL=C.UTF-8
+ENV LANG=C.UTF-8
+
+ARG MOZJPEG_VERSION="3.3.1"
 
 # Install tooling (ffmpeg, opusenc, optipng, python3)
 RUN apt-get update \
@@ -15,18 +18,19 @@ RUN apt-get update \
 WORKDIR /tmp
 
 # Install mozjpeg
-RUN curl -LS -o mozjpeg.deb https://mozjpeg.codelove.de/bin/mozjpeg_$MOZJPEG_VERSION_amd64.deb \
+RUN curl -LS -o mozjpeg.deb "https://nexus.nulloctet.com/repository/public/mozjpeg/mozjpeg_${MOZJPEG_VERSION}_amd64.deb" \
     && dpkg -i mozjpeg.deb \
+    && ln -sf /opt/mozjpeg/bin/cjpeg /bin/cjpeg \
     && rm -f mozjpeg.deb
 
 # Cleanup image programs and cache
-RUN apt-get remove curl \
+RUN apt-get remove -y curl \
     && rm -rf /var/lib/apt/lists/*
 
-WORKDIR /acm
+WORKDIR /app
 
 # Copy application
-COPY acm.py requirements.txt .
+COPY acm.py requirements.txt /app/
 
 # Install application requirements
 RUN python3 -m pip install -r requirements.txt
@@ -43,4 +47,4 @@ WORKDIR /project
 
 COPY docker/entrypoint.sh .
 
-ENTRYPOINT ["entrypoint.sh"]
+CMD ["sh", "/project/entrypoint.sh"]