web-wasm: Bump Emscripten to 1.38.24

The base image moved from jessie to stretch, so update sources and
packages. Also update gosu binary install to support gpg2 and work
around:

  gpg: cannot open '/dev/tty': No such device or address

as suggested here:

  nodejs/docker-node#922

imagefiles/install-gosu-binary.sh

@@ -8,8 +8,12 @@ if ! command -v curl &> /dev/null; then
 	exit 1
 fi
 
-if ! command -v gpg &> /dev/null; then
-	echo >&2 'error: "gpg" not found!'
+GPG=gpg
+if command -v gpg2 &> /dev/null; then
+	GPG=gpg2
+fi
+if ! command -v $GPG &> /dev/null; then
+	echo >&2 "error: $GPG not found!"
 	exit 1
 fi
 
@@ -21,17 +25,17 @@ url_key="https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-$
 # download and verify the signature
 export GNUPGHOME="$(mktemp -d)"
 
-gpg --keyserver hkp://pool.sks-keyservers.net:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 || \
-gpg --keyserver hkp://pgp.key-server.io:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 || \
-gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4
+$GPG --batch --keyserver hkp://pool.sks-keyservers.net:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 || \
+$GPG --batch --keyserver hkp://pgp.key-server.io:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 || \
+$GPG --batch --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4
 
 echo "Downloading $url"
 curl -o /usr/local/bin/gosu -# -SL $url
 
 echo "Downloading $url_key"
 curl -o /usr/local/bin/gosu.asc -# -SL $url_key
 
-gpg --verify /usr/local/bin/gosu.asc
+$GPG --verify /usr/local/bin/gosu.asc
 
 # cleanup
 rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc

web-wasm/Dockerfile.in

@@ -5,7 +5,53 @@ MAINTAINER Matt McCormick "[email protected]"
 # See https://github.com/asRIA/emscripten-docker/blob/master/Dockerfile.in#L4
 RUN rm /bin/sh && ln -s /bin/dash /bin/sh
 
-#include "common.debian"
+COPY imagefiles/install-gosu-binary.sh /buildscripts/
+
+ARG DEBIAN_FRONTEND=noninteractive
+ARG REPO=http://cdn-fastly.deb.debian.org
+
+RUN \
+  bash -c "echo \"deb $REPO/debian stretch main contrib non-free\" > /etc/apt/sources.list"  && \
+  bash -c "echo \"deb $REPO/debian stretch-updates main contrib non-free\" >> /etc/apt/sources.list"  && \
+  bash -c "echo \"deb $REPO/debian-security stretch/updates main\" >> /etc/apt/sources.list" && \
+  bash -c "echo \"deb http://ftp.debian.org/debian stretch-backports main\" >> /etc/apt/sources.list" && \
+  apt-get update --yes && \
+  apt-get install --no-install-recommends --yes \
+    automake \
+    autogen \
+    bash \
+    build-essential \
+    bc \
+    bzip2 \
+    ca-certificates \
+    curl \
+    dirmngr \
+    file \
+    gettext \
+    gnupg2 \
+    gzip \
+    zip \
+    make \
+    ncurses-dev \
+    pkg-config \
+    libtool \
+    python \
+    python-pip \
+    rsync \
+    sed \
+    ssh \
+    bison \
+    flex \
+    tar \
+    pax \
+    vim \
+    wget \
+    xz-utils \
+    zlib1g-dev \
+  && \
+  apt-get clean --yes && \
+  /buildscripts/install-gosu-binary.sh && \
+  rm -rf /buildscripts
 
 #include "common.docker"