anchor.diff:  	&& cd /usr/src/irssi \
   	&& ./configure \
   		--enable-true-color \
  +		--prefix="/usr" \
   		--with-bot \
   		--with-proxy \
   		--with-socks \
   	&& make \
   	&& make install \
  -	&& rm -rf /usr/src/irssi \
  +	&& curl -sSL "https://otr.cypherpunks.ca/libotr-${LIB_OTR_VERSION}.tar.gz" -o /tmp/libotr.tar.gz \
  +	&& curl -sSL "https://otr.cypherpunks.ca/libotr-${LIB_OTR_VERSION}.tar.gz.asc" -o /tmp/libotr.tar.gz.asc \
  +	&& curl -sSL "https://otr.cypherpunks.ca/gpgkey.asc" | gpg --import \
  +	&& gpg --verify /tmp/libotr.tar.gz.asc \
  +	&& mkdir -p /usr/src/libotr \
  +	&& tar -xzf /tmp/libotr.tar.gz -C /usr/src/libotr --strip-components 1 \
  +	&& rm /tmp/libotr.tar.gz* \
  +	&& cd /usr/src/libotr \
  +	&& ./configure --with-pic --prefix=/usr \
  +	&& make \
  +	&& make install \
  +	&& mkdir -p /usr/src/irssi-otr \
  +	&& curl -sSL "https://github.com/cryptodotis/irssi-otr/archive/v${IRSSI_OTR_VERSION}.tar.gz" | tar -vxz --strip-components 1 -C /usr/src/irssi-otr \
  +	&& cd /usr/src/irssi-otr \
  +	&& ./bootstrap \
  +	&& ./configure --prefix="/usr" \
  +	&& make \
  +	&& make install \
  +	&& rm -rf /usr/src/irssi* \
  +	&& rm -rf /usr/src/libotr* \
   	&& apt-get purge -y --auto-remove $buildDeps
   
   WORKDIR $HOME
  
positive.code: RUN gpg --keyserver pool.sks-keyservers.net --recv-keys 7EE65E3082A5FB06AC7C368D00CCB587DDBEF0E1
  
  ENV IRSSI_VERSION 0.8.17
  
  RUN buildDeps=' \
  		autoconf \
  
negative.code: 		ca-certificates \
  		curl \
  		libdatetime-perl \
  		libgcrypt20-dev \
  		libglib2.0-0 \
  		libnotify4 \
  		libnotify-bin \
  