Dockerfile-plus-preferences

# ./hooks/build dev-preferences
# ./hooks/test dev-preferences

### Example: Build and test 'dev' tag locally like
### ./hooks/build dev-preferences
### ./hooks/test dev-preferences
### or with additional arguments
### ./hooks/build dev-preferences --no-cache
### ./hooks/test dev-preferences
### or using the utility
### ./utils/util-hdx.sh Dockerfile 3
### ./utils/util-hdx.sh Dockerfile 4
### The last output line should be '+ exit 0'
### If '+ exit 1' then adjust the version sticker
### variables in script './hooks/env'

ARG BASETAG=latest

FROM accetto/ubuntu-vnc-xfce-firefox-plus:${BASETAG}

### Arguments can be provided during build
ARG ARG_MOZ_FORCE_DISABLE_E10S
ARG ARG_REFRESHED_AT
ARG ARG_VCS_REF
ARG ARG_VERSION_STICKER
ARG ARG_VNC_BLACKLIST_THRESHOLD
ARG ARG_VNC_BLACKLIST_TIMEOUT
ARG ARG_VNC_RESOLUTION

LABEL \
  any.accetto.description="Headless Ubuntu VNC/noVNC container with Xfce desktop and Firefox with preferences" \
  any.accetto.display-name="Headless Ubuntu/Xfce VNC/noVNC container with Firefox preferences" \
  version-sticker="${ARG_VERSION_STICKER}" \
  org.label-schema.vcs-ref="${ARG_VCS_REF}" \
  org.label-schema.vcs-url="https://github.com/accetto/ubuntu-vnc-xfce-firefox-plus"

ENV \
  MOZ_FORCE_DISABLE_E10S=${ARG_MOZ_FORCE_DISABLE_E10S:+1} \
  REFRESHED_AT=${ARG_REFRESHED_AT} \
  VERSION_STICKER=${ARG_VERSION_STICKER} \
  VNC_BLACKLIST_THRESHOLD=${ARG_VNC_BLACKLIST_THRESHOLD:-20} \
  VNC_BLACKLIST_TIMEOUT=${ARG_VNC_BLACKLIST_TIMEOUT:-0} \
  VNC_RESOLUTION=${ARG_VNC_RESOLUTION:-1024x768}

### Be sure to use root user
USER 0

WORKDIR ${HOME}

### Copy the file with default user preferences.
### The preferences will be forced for each session, but only in the profile containing the file.
### Make also a backup copy of the file 'user.js'.
### The VNC user ('headles:headless' by default) will get permissions to modify or delete the file.
COPY [ "./src/firefox.plus/user.js", "./.mozilla/firefox/profile0.default/" ]
COPY [ "./src/firefox.plus/user.js", "./firefox.plus/user.js" ]

RUN "${STARTUPDIR}"/set_user_permissions.sh "$STARTUPDIR" "$HOME"

### Switch to non-root user
USER ${VNC_USER}

### Issue #7 (base): Mitigating problems with foreground mode
WORKDIR ${STARTUPDIR}