Remove unnecessary intermediate layers in base-conda Dockerfile (#5697)

* [docker][base-conda] Combine ENV+COPY instructions

* [docker][base-cuda] Combine ENV+COPY instructions

* [docker][base-xla] Combine ENV+COPY instructions

* [docker][base-cuda] Fix COPY instruction

* [docker][base-xla] Fix quote in ENV

* [docker][base-xla] Fix $PATH in ENV

* [docker][base-conda] Fix COPY instruction

* chlog

Co-authored-by: Jirka Borovec <jirka.borovec@seznam.cz>

CHANGELOG.md

@@ -198,6 +198,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 - Fixed a race condition in `ModelCheckpoint` when checking if a checkpoint file exists ([#5144](https://github.com/PyTorchLightning/pytorch-lightning/pull/5144))
 
+- Remove unnecessary intermediate layers in Dockerfiles ([#5697](https://github.com/PyTorchLightning/pytorch-lightning/pull/5697))
+
 
 ## [1.1.6] - 2021-01-26
 

dockers/base-conda/Dockerfile

@@ -58,21 +58,21 @@ RUN apt-get update -qq && \
     rm -rf /root/.cache && \
     rm -rf /var/lib/apt/lists/*
 
-ENV PATH="/root/miniconda3/bin:$PATH"
-ENV LD_LIBRARY_PATH="/root/miniconda3/lib:$LD_LIBRARY_PATH"
-ENV CUDA_TOOLKIT_ROOT_DIR="/usr/local/cuda"
+ENV \
+    PATH="/root/miniconda3/bin:$PATH" \
+    LD_LIBRARY_PATH="/root/miniconda3/lib:$LD_LIBRARY_PATH" \
+    CUDA_TOOLKIT_ROOT_DIR="/usr/local/cuda" \
+    HOROVOD_GPU_OPERATIONS=NCCL \
+    HOROVOD_WITH_PYTORCH=1 \
+    HOROVOD_WITHOUT_TENSORFLOW=1 \
+    HOROVOD_WITHOUT_MXNET=1 \
+    HOROVOD_WITH_GLOO=1 \
+    HOROVOD_WITHOUT_MPI=1 \
+    # MAKEFLAGS="-j$(nproc)" \
+    MAKEFLAGS="-j1" \
+    TORCH_CUDA_ARCH_LIST="3.7;5.0;6.0;7.0;7.5" \
+    CONDA_ENV=lightning
 
-ENV HOROVOD_GPU_OPERATIONS=NCCL
-ENV HOROVOD_WITH_PYTORCH=1
-ENV HOROVOD_WITHOUT_TENSORFLOW=1
-ENV HOROVOD_WITHOUT_MXNET=1
-ENV HOROVOD_WITH_GLOO=1
-ENV HOROVOD_WITHOUT_MPI=1
-#ENV MAKEFLAGS="-j$(nproc)"
-ENV MAKEFLAGS="-j1"
-ENV TORCH_CUDA_ARCH_LIST="3.7;5.0;6.0;7.0;7.5"
-
-ENV CONDA_ENV=lightning
 COPY environment.yml environment.yml
 
 # conda init
@@ -89,10 +89,11 @@ RUN conda create -y --name $CONDA_ENV python=${PYTHON_VERSION} pytorch=${PYTORCH
     conda clean -ya && \
     rm environment.yml
 
-ENV PATH /root/miniconda3/envs/${CONDA_ENV}/bin:$PATH
-ENV LD_LIBRARY_PATH="/root/miniconda3/envs/${CONDA_ENV}/lib:$LD_LIBRARY_PATH"
-# if you want this environment to be the default one, uncomment the following line:
-ENV CONDA_DEFAULT_ENV=${CONDA_ENV}
+ENV \
+    PATH /root/miniconda3/envs/${CONDA_ENV}/bin:$PATH \
+    LD_LIBRARY_PATH="/root/miniconda3/envs/${CONDA_ENV}/lib:$LD_LIBRARY_PATH" \
+    # if you want this environment to be the default one, uncomment the following line:
+    CONDA_DEFAULT_ENV=${CONDA_ENV}
 
 COPY ./requirements/extra.txt requirements-extra.txt
 COPY ./requirements/test.txt requirements-test.txt

dockers/base-cuda/Dockerfile

@@ -31,11 +31,11 @@ ARG CMAKE_VERSION=3.18.4
 
 SHELL ["/bin/bash", "-c"]
 # https://techoverflow.net/2019/05/18/how-to-fix-configuring-tzdata-interactive-input-when-building-docker-images/
-ENV DEBIAN_FRONTEND=noninteractive
-ENV TZ=Europe/Prague
-
-ENV PATH="$PATH:/root/.local/bin"
-ENV CUDA_TOOLKIT_ROOT_DIR="/usr/local/cuda"
+ENV \
+    DEBIAN_FRONTEND=noninteractive \
+    TZ=Europe/Prague \
+    PATH="$PATH:/root/.local/bin" \
+    CUDA_TOOLKIT_ROOT_DIR="/usr/local/cuda"
 
 RUN apt-get update -qq && \
     apt-get install -y --no-install-recommends \
@@ -67,15 +67,16 @@ RUN apt-get update -qq && \
     rm -rf /root/.cache && \
     rm -rf /var/lib/apt/lists/*
 
-ENV HOROVOD_GPU_OPERATIONS=NCCL
-ENV HOROVOD_WITH_PYTORCH=1
-ENV HOROVOD_WITHOUT_TENSORFLOW=1
-ENV HOROVOD_WITHOUT_MXNET=1
-ENV HOROVOD_WITH_GLOO=1
-ENV HOROVOD_WITHOUT_MPI=1
-#ENV MAKEFLAGS="-j$(nproc)"
-ENV MAKEFLAGS="-j1"
-ENV TORCH_CUDA_ARCH_LIST="3.7;5.0;6.0;7.0;7.5"
+ENV \
+    HOROVOD_GPU_OPERATIONS=NCCL \
+    HOROVOD_WITH_PYTORCH=1 \
+    HOROVOD_WITHOUT_TENSORFLOW=1 \
+    HOROVOD_WITHOUT_MXNET=1 \
+    HOROVOD_WITH_GLOO=1 \
+    HOROVOD_WITHOUT_MPI=1 \
+    # MAKEFLAGS="-j$(nproc)" \
+    MAKEFLAGS="-j1" \
+    TORCH_CUDA_ARCH_LIST="3.7;5.0;6.0;7.0;7.5"
 
 COPY ./requirements.txt requirements.txt
 COPY ./requirements/ ./requirements/

dockers/base-xla/Dockerfile

@@ -25,8 +25,9 @@ SHELL ["/bin/bash", "-c"]
 
 ARG CONDA_VERSION=4.7.12
 # for skipping configurations
-ENV DEBIAN_FRONTEND=noninteractive
-ENV CONDA_ENV=lightning
+ENV \
+    DEBIAN_FRONTEND=noninteractive \
+    CONDA_ENV=lightning
 
 # show system inforation
 RUN lsb_release -a && cat /etc/*-release
@@ -53,8 +54,9 @@ RUN apt-get update -qq && \
     rm -rf /root/.cache && \
     rm -rf /var/lib/apt/lists/*
 
-ENV PATH="/root/miniconda3/bin:$PATH"
-ENV LD_LIBRARY_PATH="/root/miniconda3/lib:$LD_LIBRARY_PATH"
+ENV \
+    PATH="/root/miniconda3/bin:$PATH" \
+    LD_LIBRARY_PATH="/root/miniconda3/lib:$LD_LIBRARY_PATH"
 COPY environment.yml environment.yml
 
 RUN conda create -y --name $CONDA_ENV && \
@@ -67,10 +69,11 @@ RUN conda create -y --name $CONDA_ENV && \
     conda clean -ya && \
     rm environment.yml
 
-ENV PATH /root/miniconda3/envs/${CONDA_ENV}/bin:$PATH
-ENV LD_LIBRARY_PATH="/root/miniconda3/envs/${CONDA_ENV}/lib:$LD_LIBRARY_PATH"
-# if you want this environment to be the default one, uncomment the following line:
-ENV CONDA_DEFAULT_ENV=${CONDA_ENV}
+ENV \
+    PATH=/root/miniconda3/envs/${CONDA_ENV}/bin:$PATH \
+    LD_LIBRARY_PATH="/root/miniconda3/envs/${CONDA_ENV}/lib:$LD_LIBRARY_PATH" \
+    # if you want this environment to be the default one, uncomment the following line:
+    CONDA_DEFAULT_ENV=${CONDA_ENV}
 
 # Disable cache
 RUN pip --version && \