replace keyserver key retrieval with key file download

base/Dockerfile

@@ -8,42 +8,9 @@ ENV JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/
 
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends net-tools curl netcat
 
-RUN gpg --keyserver pool.sks-keyservers.net --recv-keys \
-    07617D4968B34D8F13D56E20BE5AAA0BA210C095 \
-    2CAC83124870D88586166115220F69801F27E622 \
-    4B96409A098DBD511DF2BC18DBAF69BEA7239D59 \
-    9DD955653083EFED6171256408458C39E964B5FF \
-    B6B3F7EDA5BA7D1E827DE5180DFF492D8EE2F25C \
-    6A67379BEFC1AE4D5595770A34005598B8F47547 \
-    47660BC98BC433F01E5C90581209E7F13D0C92B9 \
-    CE83449FDC6DACF9D24174DCD1F99F6EE3CD2163 \
-    A11DF05DEA40DA19CE4B43C01214CF3F852ADB85 \
-    686E5EDF04A4830554160910DF0F5BBC30CD0996 \
-    5BAE7CB144D05AD1BB1C47C75C6CC6EFABE49180 \
-    AF7610D2E378B33AB026D7574FB955854318F669 \
-    6AE70A2A38F466A5D683F939255ADF56C36C5F0F \
-    70F7AB3B62257ABFBD0618D79FDB12767CC7352A \
-    842AAB2D0BC5415B4E19D429A342433A56D8D31A \
-    1B5D384B734F368052862EB55E43CAB9AEC77EAF \
-    785436A782586B71829C67A04169AA27ECB31663 \
-    5E49DA09E2EC9950733A4FF48F1895E97869A2FB \
-    A13B3869454536F1852C17D0477E02D33DD51430 \
-    A6220FFCC86FE81CE5AAC880E3814B59E4E11856 \
-    EFE2E7C571309FE00BEBA78D5E314EEF7340E1CB \
-    EB34498A9261F343F09F60E0A9510905F0B000F0 \
-    3442A6594268AC7B88F5C1D25104A731B021B57F \
-    6E83C32562C909D289E6C3D98B25B9B71EFF7770 \
-    E9216532BF11728C86A11E3132CF4BF4E72E74D3 \
-    E8966520DA24E9642E119A5F13971DA39475BD5D \
-    1D369094D4CFAC140E0EF05E992230B1EB8C6EFA \
-    A312CE6A1FA98892CB2C44EBA79AB712DE5868E6 \
-    0445B7BFC4515847C157ECD16BA72FF1C99785DE \
-    B74F188889D159F3D7E64A7F348C6D7A0DCED714 \
-    4A6AC5C675B6155682729C9E08D51A0A7501105C \
-    8B44A05C308955D191956559A5CEE20A90348D47 \
-    57300D45
+RUN curl -O https://dist.apache.org/repos/dist/release/hadoop/common/KEYS
 
-RUN gpg --keyserver pool.sks-keyservers.net --recv-key C36C5F0F
+RUN gpg --import KEYS
 
 ENV HADOOP_VERSION 3.1.1
 ENV HADOOP_URL https://www.apache.org/dist/hadoop/common/hadoop-$HADOOP_VERSION/hadoop-$HADOOP_VERSION.tar.gz