diff --git a/Dockerfile b/Dockerfile
index 94b026e..a3378f0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -62,6 +62,9 @@ RUN tlmgr install xcolor \
                   helvetic \
                   charter
 
+# Install latexmk.
+RUN tlmgr install latexmk
+
 # Remove LuaTeX.
 RUN tlmgr remove --force luatex
 
@@ -70,12 +73,19 @@ RUN rm -rf /var/task/texlive/2017/tlpkg/texlive.tlpdb* \
            /var/task/texlive/2017/texmf-dist/source/latex/koma-script/doc \
            /var/task/texlive/2017/texmf-dist/doc 
 
+RUN mkdir -p /var/task/texlive/2017/tlpkg/TeXLive/Digest/ && \
+    mkdir -p /var/task/texlive/2017/tlpkg/TeXLive/auto/Digest/MD5/ && \
+    cp /usr/lib64/perl5/vendor_perl/Digest/MD5.pm \
+       /var/task/texlive/2017/tlpkg/TeXLive/Digest/ && \
+    cp /usr/lib64/perl5/vendor_perl/auto/Digest/MD5/MD5.so \
+       /var/task/texlive/2017/tlpkg/TeXLive/auto/Digest/MD5
 
 FROM lambci/lambda:build-python3.6
 
 WORKDIR /var/task
 
 ENV PATH=/var/task/texlive/2017/bin/x86_64-linux/:$PATH
+ENV PERL5LIB=/var/task/texlive/2017/tlpkg/TeXLive/
 
 COPY --from=0 /var/task/ /var/task/
 COPY lambda_function.py /var/task
diff --git a/lambda_function.py b/lambda_function.py
index abc3231..eb74c57 100644
--- a/lambda_function.py
+++ b/lambda_function.py
@@ -15,17 +15,20 @@ def lambda_handler(event, context):
 
     os.environ['PATH'] += ":/var/task/texlive/2017/bin/x86_64-linux/"
     os.environ['HOME'] = "/tmp/latex/"
+    os.environ['PERL5LIB'] = "/var/task/texlive/2017/tlpkg/TeXLive/"
+
     os.chdir("/tmp/latex/")
 
     # Run pdflatex...
-    for i in [1, 2]:
-        r = subprocess.run(["/var/task/texlive/2017/bin/x86_64-linux/pdflatex",
-                            "-interaction=batchmode",
-                            "-output-directory=/tmp/latex",
-                            "document.tex"],
-                           stdout=subprocess.PIPE,
-                           stderr=subprocess.STDOUT)
-        print(r.stdout.decode('utf_8'))
+    r = subprocess.run(["latexmk",
+                        "-verbose",
+                        "-interaction=batchmode",
+                        "-pdf",
+                        "-output-directory=/tmp/latex",
+                        "document.tex"],
+                       stdout=subprocess.PIPE,
+                       stderr=subprocess.STDOUT)
+    print(r.stdout.decode('utf_8'))
 
     # Read "document.pdf"...
     with open("document.pdf", "rb") as f:
diff --git a/make.jl b/make.jl
index 50147f1..73c9ded 100644
--- a/make.jl
+++ b/make.jl
@@ -3,7 +3,7 @@ module MakeLatexLambda
 using JSON
 using AWSCore
 using AWSS3
-#using AWSLambda
+using AWSLambda
 using InfoZIP
 
 function all()
@@ -62,10 +62,13 @@ test_zip = base64encode(create_zip("document.tex" =>
 
 # Test latex in local docker image.
 function localtest()
+    write("test_input.zip.base64", test_zip)
     pycmd = """
         import lambda_function
         import json
-        out = lambda_function.lambda_handler({'input': '$test_zip'}, {})
+        import base64
+        out = lambda_function.lambda_handler(
+              {'input': open('/var/host/test_input.zip.base64').read()}, {})
         with open('/var/host/test_output.json', 'w') as f:
             f.write(json.dumps(out))
         """